The one-sentence truth: Synonyms are rarely identical; safe paraphrase depends on finding a word that preserves the original degree, direction and context.
Students often search for a one-to-one replacement. English rarely works that neatly. Reduce, mitigate, alleviate and diminish overlap, but their normal objects and shades of meaning differ.
Use plain-English intermediate meaning
Before replacing a word, translate it into a simple concept. If exacerbate means “make an existing problem worse”, rebuild that meaning rather than hunting for a fancy synonym.
Preserve degree
Possible is weaker than probable. Significant is weaker than decisive. Concerned is weaker than alarmed. Degree is meaning.
Preserve direction
Mitigate reduces harm. Prevent stops occurrence. Offset counterbalances. Do not replace based only on a dictionary overlap.
Preserve collocation
Words prefer certain partners: pose a risk, exercise authority, substantiate a claim, alleviate suffering, mitigate damage. A replacement that sounds unnatural may signal semantic mismatch.
Change the sentence structure
Instead of replacing every word individually, change active/passive voice, noun/verb form, clause order and sentence emphasis. “Regulation constrains firms by raising compliance costs” can become “Higher compliance costs can limit the freedom firms have under stricter rules.”
Use definitions as paraphrases
Technical concepts can often be unpacked: “externalities” → “costs or benefits imposed on people outside the transaction”. This demonstrates understanding and reduces synonym risk.
Avoid accidental strengthening
“May erode trust” must not become “destroys trust”. “Can contribute to inequality” must not become “causes inequality”. Preserve modal and causal strength.
A safe replacement checklist
- Same core meaning?
- Same degree?
- Same positive/negative direction?
- Same grammatical role?
- Natural collocation?
- Same scope and certainty?
Seven-day drill
- Build synonym ladders by strength.
- Practise definition-based paraphrase.
- Change noun forms into verbs.
- Change clause order.
- Audit collocations.
- Check accidental strengthening.
- Complete a timed paraphrase set.
Continue the JC2 GP vocabulary system
Return to General Paper Vocabulary Year 2 (JC2) and Vocabulary for Junior College (JC1–JC2).
Final thought
Paraphrasing is safe when you preserve the thought first and change the language second.