Argument & Persuasion — C1 English Vocabulary
This C1 vocabulary list gathers 60 advanced English words about argument & persuasion — making, winning and conceding a case. Every word comes with a simple definition, its British-English pronunciation and a natural example sentence, so you learn each one in real context. When you are ready, open the flashcards to practise and remember them for good.
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Using argument & persuasion words in English
Advanced argumentative vocabulary is largely about calibrating how much force you claim. Rebut, refute and repudiate look like three ways of saying disagree and are not. This page also contains a spelling trap that survives spellcheckers — tenet against tenant — and equivocate, whose meaning is narrower and less flattering than most learners assume.
What to watch out for
Rebut, refute, repudiate
To rebut is to argue against a claim. To refute, strictly, is to prove it false — a much stronger assertion, though journalism now uses it loosely. To repudiate is to reject something formally and publicly, often something previously associated with you: the party repudiated its former leader. The three describe increasing force and increasing formality.
A tenet is a belief; a tenant rents a flat
A tenet is a principle held by a group: a central tenet of the theory. A tenant occupies property. They differ by one letter, sound similar in rapid speech, and no spellchecker will catch the substitution because both are real words. Two neighbours worth fixing at the same time: a corollary is something that follows necessarily from what has just been proved, and a caveat is a warning or qualification attached to a claim.
Equivocate is not merely to hesitate
To equivocate is to use deliberately ambiguous language in order to avoid committing yourself — it implies evasiveness rather than uncertainty: The minister equivocated for twenty minutes. Prevaricate is close and means to speak evasively or misleadingly. Neither means simply to delay, which is what the everyday misuse suggests. Fallacious is different again: it means built on faulty reasoning, not merely untrue.
Words learners mix up
At this level the vocabulary stops describing what was said and starts judging it — whether the reasoning holds, how far somebody gave ground, and by what means they were brought round. All three judgements are made by word choice alone.
Naming a bad argument precisely
| Word | What it actually means | In a sentence |
|---|---|---|
| fallacious | Built on faulty reasoning. A structural charge — the conclusion may still happen to be true. | The comparison is fallacious. |
| specious | Looks convincing and is not. The word is about the appearance of soundness, and it implies the reader was nearly taken in. | A specious argument that survived a decade. |
| sophistry | Clever reasoning used deliberately to mislead. Uncountable, and it accuses the arguer, not just the argument. | The defence was pure sophistry. |
| untenable | Cannot be defended any longer, whatever its merits once were. Its positive form, tenable, is rarer. | His position became untenable. |
The escalation is worth feeling: fallacious criticises the logic, specious adds that it was plausible enough to deceive, and sophistry alleges intent. Against them sit the formal machinery words — an axiom is a starting point accepted without proof, and a syllogism is the two-premises-and-a-conclusion form itself.
Six degrees of giving ground
| Word | What it actually means | In a sentence |
|---|---|---|
| concur | Agrees, formally. Takes with a person and often stands alone in minutes and judgments. | I concur with my colleague’s assessment. |
| demur | Objects mildly or hesitates to accept. Frequently in the negative: she did not demur. | Two members demurred at the wording. |
| remonstrate | Protests forcefully and in person. Takes with the person you are arguing at. | He remonstrated with the referee. |
| acquiesce | Accepts without protest — often reluctantly, and the silence is the point. Takes in or to. | The board acquiesced in the decision. |
| relent | Softens after resisting, usually under pressure. Intransitive. | She finally relented and let them stay. |
| capitulate | Surrenders completely. Military in origin, and it concedes the whole argument. | The company capitulated within a week. |
Acquiesce is the one that carries an implication worth noticing: it suggests consent given by not objecting, which is why it appears so often in criticism of people who stayed silent. Concur is the only positive member of the group.
How somebody was brought round
| Word | What it actually means | In a sentence |
|---|---|---|
| coax | Persuades gently and patiently, often someone reluctant or nervous. Warm, and takes into. | They coaxed her into speaking. |
| cajole | Persuades with flattery and persistence. Slightly manipulative, though rarely sinister. | He cajoled the committee into funding it. |
| implore | Begs urgently and emotionally. The speaker has no power, only need. | She implored them to reconsider. |
| galvanise | Shocks a group into action. From electricity, and its object is usually collective. | The ruling galvanised the campaign. |
| haggle | Argues over price specifically. Practical and transactional, not rhetorical at all. | They haggled over the final figure. |
Only galvanise works on a crowd; the rest work on individuals. And haggle sits oddly among them because its subject is money rather than opinion — its close neighbour wrangle means to argue at length and messily, usually about terms.
Collocations that sound natural
Argument vocabulary is unusually frozen: several of these nouns appear in one phrase and almost nowhere else, so learning the phrase is learning the word.
caveat
with one caveata major caveatsubject to the caveat thatcaveat emptor
Caveat emptor — let the buyer beware — is the Latin tag it comes from. Pronounced CAV-ee-at in British English.
crux
the crux of the matterthe crux of the argumentthis is the crux
Almost always singular and with the. From Latin for cross — the point where everything meets.
credence
lend credence togive credence togain credenceno credence whatever
Uncountable, and it means belief given to a claim rather than the claim’s own credibility. Evidence lends it; people give it.
gist
get the gistthe gist of itthe general gist
Uncountable and informal-leaning: the essential meaning without the detail. Always with the.
nuance
a subtle nuancea nuanced argumentlose the nuancenuances of meaning
The adjective nuanced is high praise in academic writing — it means the argument recognises complications rather than flattening them.
salient
the salient pointsalient featuresthe most salient of these
Means standing out as most important. Pertinent is its neighbour and means relevant to the matter in hand — related but not the same claim.
Formal, neutral or informal?
This page holds one word that means opposite things in British and American English, and a cluster of others that are open attacks rather than descriptions. Both kinds are easy to deploy by accident.
- mootReverses across the AtlanticIn British English a moot point is one open to debate. In American English moot increasingly means the opposite — no longer worth debating because it has been overtaken by events. Because the two readings conflict, in international writing say debatable or no longer relevant.
- polemicFormal · combativeA strongly argued attack on a position, as a noun; the adjective is polemical. Not an insult in itself — a polemic can be admired — but it does declare that the piece is arguing, not surveying.
- diatribePejorativeA long, bitter verbal attack. Unlike a polemic, this is never a compliment: calling something a diatribe says it was excessive. Lambaste is the matching verb — to criticise harshly and publicly.
- dogmaticPejorativeAsserting principles as unquestionable. Always a criticism, and note that the noun dogma is neutral in a religious context while the adjective in ordinary argument is not.
- belabourFixed phraseSurvives chiefly in belabour the point, meaning to go on explaining something already understood. British spelling keeps the -our.
- quibbleMildly dismissiveTo argue about something trivial. Both noun and verb, and using it about someone’s objection is itself a way of dismissing it: a minor quibble.
- adamant / vehement / categoricalDegrees of insistenceAdamant means refusing to be persuaded — from the old word for an unbreakable stone. Vehement describes force of feeling in the delivery. Categorical describes the statement itself: absolute and admitting no exception, as in a categorical denial.
- positAcademicTo put forward for consideration or assume as a basis: the paper posits three stages. Neutral and common in the humanities; in ordinary prose suggest or propose reads better.
Sentences to try
Four frames from advanced argument. Notice how much each verb actually claims.
- The paper rebuts three of the standard objections.
- That conclusion is a direct corollary of the first premise.
- She accepted the finding with one important caveat.
- His reasoning was cogent but rested on a fallacious premise.
Questions about argument & persuasion vocabulary
What is the difference between rebut, refute and repudiate?
They describe increasing force. To rebut a claim is to argue against it and present the opposing case. To refute it, in strict usage, is to demonstrate conclusively that it is false — so you should only write refuted when the argument was actually defeated, though news writing now uses it loosely to mean denied. To repudiate is to reject something formally and often publicly, particularly a commitment, doctrine or association you previously held: He repudiated his earlier statement.
What is the difference between a tenet and a tenant?
A tenet is a principle or belief held as true by a person or group: one of the central tenets of liberalism. A tenant is someone who rents and occupies a property. The two are unrelated, differ by a single letter, and are close enough in rapid speech to be misheard — and because both are ordinary English words, a spellchecker will never flag the wrong one. If you mean a belief, the word has no second n.
What does "equivocate" actually mean?
To use language that is deliberately ambiguous so as to avoid committing yourself to a position, usually in order to mislead or to escape responsibility: Asked directly, he equivocated. It implies evasiveness rather than honest uncertainty, so describing a thoughtful person as equivocating is a criticism. The near-synonym prevaricate means to speak or act evasively and is equally unflattering. If you simply mean somebody was undecided, the neutral words are hesitate, waver or be non-committal.