Vocabulary tool
Prefix & suffix vocabulary builder
You do not need to memorise every academic word one by one. Prefixes, suffixes, and word families help you infer meaning and produce cleaner paraphrases.
IELTSTOEFLGeneral
High-frequency prefixes
| Prefix | Meaning | Examples |
|---|---|---|
| anti- | against | antisocial, antibiotic |
| co- | together | cooperate, coexist |
| inter- | between | international, interact |
| mis- | wrongly | misread, misunderstand |
| re- | again | rebuild, reassess |
High-frequency suffixes
| Suffix | Function | Examples |
|---|---|---|
| -tion / -sion | noun | education, decision |
| -able | adjective | reliable, measurable |
| -ity | noun | ability, complexity |
| -ive | adjective | productive, competitive |
| -ise / -ize | verb | organise, modernize |
Practice method
- Learn one word family at a time: analyse, analysis, analytical, analyst.
- Write one IELTS or TOEFL sentence with each form.
- Check whether the word is formal enough for writing or only natural in speaking.
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