impair.
To weaken; to affect negatively; to have a diminishing effect on.
Meaning & usage
To weaken; to affect negatively; to have a diminishing effect on.
To grow worse; to deteriorate.
Where this word comes from
From Middle English impairen, empeiren, from Old French empeirier, from Early Medieval Latin impeiōrāre, from in- + Late Latin peiōrāre (“worsen”), from peiōrem (“worse”), comparative of malus (“bad”).
Not fit or appropriate; unsuitable.
Where this word comes from
From Middle English impairen, empeiren, from Old French empeirier, from Early Medieval Latin impeiōrāre, from in- + Late Latin peiōrāre (“worsen”), from peiōrem (“worse”), comparative of malus (“bad”).
The act of impairing or deteriorating.
The fact of being impaired or having grown worse.
An impairment or deterioration.
Where this word comes from
From Middle English impairen, empeiren, from Old French empeirier, from Early Medieval Latin impeiōrāre, from in- + Late Latin peiōrāre (“worsen”), from peiōrem (“worse”), comparative of malus (“bad”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.