What does abjure mean?
To abjure is to renounce something — a belief, an allegiance, a claim, or a way of life — in a solemn, public, and often legally binding manner. The word carries weight: it suggests formality, finality, and frequently an element of pressure or ceremony, as when heretics were compelled to abjure their doctrines or when a claimant abjured all rights to a title. Derived from Latin roots meaning 'to swear away,' abjure implies that the renunciation is sworn rather than merely stated, distinguishing it from lighter terms like 'reject' or 'drop.' Today it appears mostly in formal writing, law, religion, and historical narrative. Related words such as 'abjuration' name the formal act itself. Though uncommon in casual speech, abjure remains a precise and powerful choice whenever a renunciation carries real consequence.
verbTo abjure is to solemnly renounce or reject a belief, claim, or course of action, typically under oath or with formal gravity. It can also mean to repudiate or retract a statement.
- To renounce or repudiate a belief, claim, or right solemnly and publicly, often under oath.
- (Historical/legal) To swear forever to abstain from some act or allegiance, as in abjuring the realm.
"Under pressure from the inquisitors, Galileo was forced to abjure his belief that the Earth moves around the Sun."
"The defector was required to abjure his former citizenship before taking the new oath."
"She abjured all claims to the family estate in exchange for a modest settlement."
Galileo didn't just deny heliocentrism — he formally abjured it on his knees before the Inquisition, making this the word of history's most famous scientific surrender.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of abjure
Abjure comes from Latin 'abiurare,' formed from 'ab-' (away) plus 'iurare' (to swear), literally meaning 'to swear away.' It entered English in the late Middle Ages via Old French, initially used in legal contexts such as 'abjuring the realm' — swearing an oath never to return after fleeing justice. Its Latin root 'iurare' also gives English related words including 'adjure,' 'conjure,' 'perjure,' and 'jury,' all tied to the concept of oath-taking. Over time its use broadened from strictly legal oaths to any solemn, formal renunciation of belief or allegiance.
Related word forms
How abjure is actually used
Formal and literary in register; rare in everyday conversation. Carries connotations of solemnity, finality, and often coercion or ceremony — one does not casually abjure a preference. Frequently found in legal, religious, and historical contexts.
Easily confused with abjure
'Abjure' means to renounce or swear something away, while 'adjure' means to urge or command someone solemnly, as if under oath.