Words / D / General

defeasible

/dɪˈfiːzɪbəl/

C2CEFR level
92/100Rarity: very rare
TechnicalRegister

General adjective

Capable of being overturned or annulled by further evidence or considerations.

Everyday knowledge claims are defeasible, holding only until stronger counter-evidence appears.

Similar: revisable, annullable

Origin: Old French 'desfaire' to undo, from Latin 'dis-' + 'facere'.

Topic: epistemology in General English

Law adjective

Capable of being brought to an end or voided if a specified condition occurs.

The gift was defeasible: the land would revert if it ever ceased to be used as a school.

Topic: Property in Legal English

Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.

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More general words: epistemology