Argumentation — TOEFL Academic Vocabulary
Argumentation Five high-utility words with the full apparatus: pronunciation, both definitions, natural + academic examples, collocations, family, mistakes — then a 10-question set quiz.
argue /ˈɑːrɡjuː/ verb B2
Meaning: to give reasons for or against an idea
Academic meaning: to present reasons and evidence in support of a position, or to dispute an opposing position
Natural example: The two friends argued about where to eat dinner.
Academic example: The author argues that social media has weakened face-to-face communication.
Collocations: argue that · argue for / argue against · it can be argued that
Synonyms: claim, maintain, contend
Antonyms: concede, agree
Word family: argue (verb) · argument (noun) · argumentative (adjective) · arguably (adverb)
⚠ Common mistake: Knowing only the 'quarrel' sense and missing the main academic use: presenting a reasoned case for a position.
Register: neutral; the academic sense is formal · Usage: In academic writing, 'X argues that…' means 'X presents the case that…' — no anger is implied.
claim /kleɪm/ verb B2
Meaning: to say something is true, sometimes without proof
Academic meaning: to assert a position or finding as a statement that the following evidence is meant to support
Natural example: He claimed he had finished the work, but the file was empty.
Academic example: The researchers claim that the vaccine is effective in 90 percent of cases.
Collocations: claim that · make a claim · support the claim
Synonyms: assert, state, allege
Antonyms: deny, disprove
Word family: claim (verb) · claim (noun) · claimant (noun)
⚠ Common mistake: Treating 'claim' as a neutral word for 'say' — it often signals that the writer is not yet convinced the statement is proven.
Register: neutral; frequent in academic reporting · Usage: Use 'claim' to report a position neutrally or with slight distance; use 'show' or 'demonstrate' when the evidence is strong.
support /səˈpɔːrt/ verb B1
Meaning: to show that an idea is true or likely; to back it up
Academic meaning: to provide evidence or reasons that strengthen a claim, theory, or interpretation
Natural example: All my friends supported me when I lost my job.
Academic example: The new data strongly support the hypothesis that sleep aids memory consolidation.
Collocations: support the idea that · the evidence supports · strongly support the hypothesis
Synonyms: back up, confirm, reinforce
Antonyms: contradict, undermine
Word family: support (verb) · support (noun) · supportive (adjective) · supporter (noun)
⚠ Common mistake: Knowing only the 'help a person' sense and missing the evidence sense that dominates academic reading and listening.
Register: neutral; a key academic verb · Usage: In research writing, it is usually evidence that does the supporting: data, results, or findings 'support' a claim.
challenge /ˈtʃæləndʒ/ verb B2
Meaning: to question whether something is true or right
Academic meaning: to dispute an established claim, method, or assumption by presenting counter-evidence or criticism
Natural example: Nobody challenged the manager's decision at the meeting.
Academic example: Recent findings challenge the assumption that multitasking improves productivity.
Collocations: challenge the view that · challenge an assumption · seriously challenge
Synonyms: question, dispute, contest
Antonyms: accept, defend
Word family: challenge (verb) · challenge (noun) · challenging (adjective)
⚠ Common mistake: Using 'challenge' only to mean 'a difficult task' — as a verb in academic texts it means to question the validity of an idea.
Register: neutral to formal; academic · Usage: It is usually followed by an abstract noun: challenge a theory, an assumption, a conclusion, or the evidence.
conclude /kənˈkluːd/ verb B2
Meaning: to decide something after thinking carefully about the facts
Academic meaning: to reach a judgment or inference based on the evidence presented, typically at the end of an argument or study
Natural example: After listening to both sides, she concluded that he was right.
Academic example: The authors conclude that the intervention had no significant effect on performance.
Collocations: conclude that · it can be concluded that · the study concludes
Synonyms: infer, deduce, determine
Antonyms: begin, assume
Word family: conclude (verb) · conclusion (noun) · conclusive (adjective) · conclusively (adverb)
⚠ Common mistake: Using 'conclude' for any essay ending — academically it means the judgment you reach FROM evidence, not simply the final paragraph.
Register: formal; academic · Usage: 'X concludes that…' is the standard way to report a study's final judgment in summaries and literature reviews.