Top 100 Secondary 4 SEC G3 Vocabulary List: Essential

Here are 100 essential vocabulary words for Secondary 4 students studying English at SEC G3 level. This final Essential list develops precise language for close reading, argument, evaluation, writing and oral communication.

Aberration
Acquiesce
Acute
Adverse
Alleviate
Analogous
Anomaly
Assuage
Augment
Austere
Avert
Benign
Catalyst
Caveat
Circumspect
Cogent
Contingency
Counterargument
Cumulative
Cursory
Deference
Delineate
Derivative
Discern
Dispassionate
Disposition
Disproportionate
Dissonance
Dogmatic
Empirical
Equivocal
Exacerbate
Expedient
Fallacy
Feasible
Fleeting
Fortitude
Futile
Galvanise
Holistic
Homogeneous
Ideological
Imminent
Imperative
Incisive
Incongruous
Indispensable
Inevitable
Inherent
Inhibit
Insidious
Intangible
Judicious
Juxtapose
Magnanimous
Mitigate
Multifaceted
Negligible
Ostensibly
Pervasive
Poignant
Precarious
Precedent
Premise
Presuppose
Proponent
Prudent
Rebut
Rectify
Reiterate
Repercussion
Salient
Sanguine
Sporadic
Stringent
Succinct
Superfluous
Synthesis
Trade-off
Transcend
Unequivocal
Untenable
Volatility
Acumen
Apathy
Conjecture
Demarcate
Despondent
Dichotomy
Disparage
Eradicate
Exhaustive
Gratuitous
Mediocre
Polarise
Rhetoric
Spurious
Judgement
Inference
Sceptical

Top 100 Secondary 4 SEC G3 Essential Vocabulary Words with Meanings and Examples

Word	Meaning	Example (Singapore Context)
1. Aberration	a departure from what is normal or expected	The unusually low attendance was treated as an aberration rather than a trend.
2. Acquiesce	to accept something without protest, often reluctantly	Farah acquiesced to the revised plan even though she preferred the original.
3. Acute	very severe, intense or sharply felt	The report described an acute shortage of volunteers during the final week.
4. Adverse	unfavourable or harmful	Heavy rain had an adverse effect on attendance.
5. Alleviate	to make a problem or burden less severe	Sharing the research tasks helped alleviate pressure on the group leader.
6. Analogous	similar in a relevant way that allows comparison	The teacher used an analogous school situation to explain the unfamiliar problem.
7. Anomaly	something that does not fit an expected pattern	One unusually high result appeared to be an anomaly in the data.
8. Assuage	to reduce an unpleasant feeling such as fear	The principal held a question-and-answer session to assuage concerns about the sudden timetable change.
9. Augment	to increase or add to something	The writer augmented the survey findings with interviews from students who had not completed the form.
10. Austere	plain, severe or without unnecessary comfort	The hostel room was austere, with white walls, a narrow bed and no decoration.
11. Avert	to prevent something undesirable from happening	A final check averted confusion by catching the incorrect room number.
12. Benign	harmless or unlikely to cause damage	The unusual sound seemed alarming, but the technician found a benign cause: a loose plastic cover.
13. Catalyst	something that causes or speeds up change	The failed rehearsal became a catalyst for changing the presentation.
14. Caveat	a warning or qualification attached to a statement	The recommendation came with a caveat: the trial involved only one class.
15. Circumspect	careful to consider risks before acting	Because the evidence was incomplete, the editor was circumspect and avoided naming anyone in the article.
16. Cogent	clear, logical and convincing	She gave a cogent explanation of why the timetable needed to change.
17. Contingency	a possible future event that may require a response	The organisers kept a backup generator as a contingency in case the main power supply failed.
18. Counterargument	an argument that challenges another position	The essay considered the counterargument that a longer session might allow deeper discussion.
19. Cumulative	increasing through the addition of successive parts	The cumulative strain of late nights and early practices left the team exhausted by Friday.
20. Cursory	quick and not sufficiently careful	A cursory check failed to notice that two dates were different.
21. Deference	respectful acceptance of another person’s judgement	In deference to the engineer’s expertise, the committee delayed reopening the room until she completed another inspection.
22. Delineate	to describe or mark out clearly	The introduction clearly delineated the scope of the investigation and what it would not attempt to prove.
23. Derivative	too closely based on another work or idea	The short film felt derivative because several scenes closely imitated a famous advertisement.
24. Discern	to recognise something not immediately obvious	The reader could discern a change in the narrator’s attitude from her shorter replies.
25. Dispassionate	not influenced by strong personal emotion when judging	A dispassionate evaluation should compare the evidence without rewarding the option the reviewer personally prefers.
26. Disposition	a person’s usual mood or tendency of behaviour	His calm disposition made him a natural choice to mediate the tense discussion.
27. Disproportionate	too large or small in relation to what is reasonable	A week-long suspension for a minor first offence would be disproportionate to the harm caused.
28. Dissonance	a lack of agreement or harmony	The narrator experiences dissonance between her belief in honesty and her decision to hide the mistake.
29. Dogmatic	insisting that one’s beliefs are unquestionably correct	His dogmatic insistence that there was only one acceptable method prevented the group from testing a better idea.
30. Empirical	based on observation, experience or experiment	The timed trial provided empirical evidence about how long the task took.
31. Equivocal	unclear or open to more than one interpretation	The equivocal reply left the class unsure whether permission had been granted.
32. Exacerbate	to make an existing problem worse	A second conflicting notice exacerbated the confusion.
33. Expedient	convenient for an immediate purpose though not always wise	Skipping the safety check was expedient when time was short, but it created a larger risk.
34. Fallacy	an error in reasoning	The argument relied on the fallacy that popularity proves effectiveness.
35. Feasible	possible and practical to carry out	The project was feasible only if the team could borrow the equipment.
36. Fleeting	lasting for only a short time	A fleeting expression of doubt crossed her face before she agreed to the plan.
37. Fortitude	courage and strength in prolonged difficulty	She showed fortitude by rebuilding the project after several failed attempts.
38. Futile	incapable of producing the intended result	Arguing about the poster design was futile after the printer deadline had already passed.
39. Galvanise	to spur people into taking action	The closure of the youth centre galvanised former members to organise a community petition.
40. Holistic	considering the whole situation and its connected parts	A holistic review considered preparation, participation and follow-up.
41. Homogeneous	consisting of very similar people or things	The research sample was too homogeneous because almost every respondent came from the same age group.
42. Ideological	relating to a system of beliefs about society	The disagreement was partly ideological, reflecting different beliefs about how much responsibility individuals and institutions should carry.
43. Imminent	expected to happen very soon	With the audience’s arrival imminent, the group completed essential checks.
44. Imperative	extremely important or necessary	It was imperative to correct the address before sending invitations.
45. Incisive	clear and perceptive in identifying an important issue	Her incisive comment separated the emotional appeal of the proposal from the evidence needed to justify it.
46. Incongruous	out of place or inconsistent with surroundings	The luxurious decorations looked incongruous in a campaign that claimed to be reducing unnecessary spending.
47. Indispensable	absolutely necessary	Source checking is indispensable when an essay depends on statistics found online.
48. Inevitable	certain to happen or impossible to avoid	Once the deadline passed and no extension had been granted, a penalty was inevitable.
49. Inherent	existing as a natural or basic part of something	Any anonymous survey has an inherent limitation: researchers cannot always verify who submitted each response.
50. Inhibit	to make an action or process more difficult	A fear of making mistakes can inhibit students from experimenting with unfamiliar vocabulary.
51. Insidious	gradually causing harm in a way difficult to notice	The insidious spread of false information slowly changed attitudes before the correction reached most readers.
52. Intangible	real or important but not physical or easily measured	Trust is an intangible asset, yet losing it can damage a team more than losing equipment.
53. Judicious	showing careful and sensible judgement	The writer made judicious use of quotations, selecting only those that directly advanced the argument.
54. Juxtapose	to place two things together for comparison or contrast	The article juxtaposed rising participation figures with falling satisfaction scores to reveal a more complicated picture.
55. Magnanimous	generous and forgiving, especially towards a rival	The defeated captain was magnanimous enough to congratulate the winners and thank the officials.
56. Mitigate	to reduce the severity or harmful effect of something	A backup venue could mitigate disruption if rain cancelled the activity.
57. Multifaceted	having several different but connected aspects	The problem was multifaceted because timing, access, cost and workload mattered.
58. Negligible	too small to have much practical importance	The extra printing cost was negligible compared with the benefit.
59. Ostensibly	apparently true or stated as such though reality may differ	The meeting was ostensibly about scheduling, but most of the discussion concerned budget cuts.
60. Pervasive	spread widely throughout a situation or group	A pervasive sense of uncertainty affected the class after several deadlines were changed without explanation.
61. Poignant	causing a strong feeling of sadness or tenderness	The farewell note was poignant because it thanked the teacher for support given during a difficult year.
62. Precarious	uncertain, unstable or easily put at risk	The project’s future was precarious because only one student knew the equipment.
63. Precedent	an earlier example that may guide a later decision	If the exception is granted without clear reasons, it may create a precedent for similar requests later.
64. Premise	a statement or assumption on which an argument is based	The proposal depended on the premise that every participant could stay after school.
65. Presuppose	to assume something is true before it is established	To ask why the programme failed would presuppose that failure had already been established.
66. Proponent	a person who supports a particular idea	One proponent of the change argued that shorter meetings would improve attendance.
67. Prudent	careful and sensible about future consequences	It was prudent to confirm the booking before announcing the event.
68. Rebut	to answer an argument with opposing reasons or evidence	The student rebutted the objection by explaining how the trial would limit workload.
69. Rectify	to correct something that is wrong	The editor rectified the incorrect date before publication.
70. Reiterate	to state something again for clarity or emphasis	The chairperson reiterated the main condition before the vote so no one could claim to have misunderstood it.
71. Repercussion	an indirect or later consequence, usually unwelcome	One repercussion of the misleading notice was contacting every participant again.
72. Salient	most important or noticeable	The summary retained the salient reasons and omitted repeated examples.
73. Sanguine	optimistic or confident about a difficult situation	The organisers were surprisingly sanguine about the delay because the venue had offered a later slot.
74. Sporadic	occurring irregularly rather than continuously	Sporadic internet access made it difficult for the group to coordinate work outside school.
75. Stringent	strict and demanding	The competition introduced more stringent verification rules after several entries contained uncited material.
76. Succinct	brief and clearly expressed	Her succinct conclusion brought the main reasons together without repetition.
77. Superfluous	unnecessary because it adds nothing useful	The decorative animation was superfluous because it added no information and distracted from the graph.
78. Synthesis	the combination of different ideas into a connected whole	The final paragraph offered a synthesis of the competing viewpoints.
79. Trade-off	a situation where gaining one benefit requires giving up another	The timetable involved a trade-off between longer discussion and an earlier finish.
80. Transcend	to go beyond a usual limit or boundary	The novel’s conflict between loyalty and ambition transcends the particular time period in which it is set.
81. Unequivocal	clear and leaving no doubt	The final message gave unequivocal permission to use the room.
82. Untenable	unable to be defended or maintained reasonably	The claim became untenable once contradictory instructions were found.
83. Volatility	the tendency to change rapidly and unpredictably	The volatility of food prices forced the organisers to revise the budget twice.
84. Acumen	the ability to make quick and accurate judgements	Her financial acumen was evident when she identified a hidden recurring cost that everyone else had overlooked.
85. Apathy	a lack of interest, enthusiasm or concern	Student apathy became a problem when fewer than ten people bothered to vote in the council election.
86. Conjecture	an opinion or conclusion formed without complete evidence	The prediction remained conjecture because registration had not opened.
87. Demarcate	to establish or mark a clear boundary	Painted lines demarcated the cycling lane from the pedestrian path.
88. Despondent	very discouraged and without much hope	He became despondent after three applications were rejected, but his mentor helped him review what could be improved.
89. Dichotomy	a division into two sharply contrasting groups or ideas	The discussion challenged the simple dichotomy between success and failure.
90. Disparage	to speak about someone or something as if it has little value	A strong rebuttal challenges the argument without disparaging the person who made it.
91. Eradicate	to remove or destroy something completely	The campaign aimed to eradicate standing water in the area to reduce mosquito breeding.
92. Exhaustive	including all or nearly all relevant details	The review was exhaustive, covering every incident report from the previous two years.
93. Gratuitous	unnecessary and without good reason	The violent detail was gratuitous because it added shock but no insight into the character or conflict.
94. Mediocre	only average in quality and not very good	The presentation was mediocre: accurate enough, but poorly organised and lacking any clear analysis.
95. Polarise	to divide people into strongly opposing groups	Framing the issue as a choice between two extreme positions may polarise the discussion and make compromise harder.
96. Rhetoric	language designed to persuade or create an effect	The advertisement relied on emotional rhetoric rather than evidence.
97. Spurious	false or not based on sound reasoning	The claim was spurious because its evidence did not support it.
98. Judgement	the ability to make sensible decisions	The student showed good judgement by checking the evidence before making a strong claim.
99. Inference	a conclusion reached from clues or evidence	The reader’s inference was based on the narrator’s repeated hesitation.
100. Sceptical	not easily convinced and wanting stronger evidence	The reader remained sceptical because the claim was supported by only one example.

What Changes in Secondary 4?

The final G3 Essential stage asks students to control nuance and evidence under examination pressure. Recognition can come before confident production: understand demanding vocabulary widely, but use it selectively.

Secondary 4 G3 Essential Practice — Round 1

meaning boundary

Choose four words and practise meaning boundary. Explain each word simply, use it in a fresh context and compare it with a nearby word. State what changes in meaning, strength or tone.