unproper.
Improper, not according with fact or reason; wrong, irregular.
Meaning & usage
Improper, not according with fact or reason; wrong, irregular.
Improper, not suited for its use or application; inappropriate.
Not belonging to a given person; someone else's.
Improper, not according with good standards of behaviour; indecent, indecorous.
Where this word comes from
Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Germanic *un- Proto-West Germanic *un- Old English un- Middle English un- English un- Proto-Indo-European *per-der.? Proto-Indo-European *per-der.? Proto-Indo-European *pér Proto-Indo-European *-o Proto-Indo-European *pró Proto-Indo-European *pro- Proto-Italic *pro- Proto-Indo-European *preyH- Proto-Indo-European *-ós Proto-Indo-European *priHós Proto-Italic *prijos Proto-Italic *proprijos Latin propriusbor. Anglo-Norman proprebor. Middle English propre English proper English unproper From un- + proper.
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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.