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defile.

To make (someone or something) physically dirty or unclean; to befoul, to soil.

6 characters3 syllables approx.English language

Meaning & usage

verb/dɪˈfaɪl/Received-Pronunciation/ˈdiː-/Received-Pronunciation/dəˈfaɪl/General-American/ˈdiˌfaɪl/General-American
  1. To make (someone or something) physically dirty or unclean; to befoul, to soil.

    transitive
  2. To make (someone or something) morally impure or unclean; to corrupt, to tarnish.

    transitive
  3. To act inappropriately towards or vandalize (something sacred or special); to desecrate, to profane.

    transitive
    To urinate on someone’s grave is an example of a way to defile it.
  4. To cause (something or someone) to become ritually unclean.

    transitive
  5. To deprive (someone) of their sexual chastity or purity, often not consensually; to deflower, to rape.

    obsolete · transitive
    The serial rapist kidnapped and defiled a six-year-old girl.
  6. To dishonour (someone).

    obsolete · transitive
  7. To become dirty or unclean.

    intransitive · obsolete
  8. To cause uncleanliness; specifically, to pass feces; to defecate.

    intransitive · obsolete
Where this word comes from

From Late Middle English defilen (“to make dirty, befoul; rape; abuse; destroy; injure; oppress”) [and other forms], a variant of defoulen (“to make dirty, defile, pollute; have sexual intercourse with; rape; etc.”) (compare also defoilen). Defoulen is a blend of Middle English foulen (“to make dirty, soil, pollute”) (from the adjective foul (“dirty, rotten, stinking, corrupt, sinful, guilty”) and Old English fūlian (“to decay”)), and Old French defoler, defouler (“to trample, crush; destroy”), from de- (intensifying prefix) + foler, fouler, fuller (“to trample, tread on; mistreat, oppress, destroy”) (from Vulgar Latin fullāre (“to full (make cloth denser and firmer by soaking, beating, and pressing)”), from Latin fullō (“person who fulls cloth, fuller”); further etymology uncertain, possibly from Proto-Indo-European *bʰleh₃- (“to blow; to inflate, swell; to bloom, flower”) or Etruscan 𐌘𐌖𐌋𐌖 (φulu)). The English word is analysable as de- + file (“to corrupt; defile”). The Middle English word defilen was probably formed from defoulen on the analogy of befilen (“to make dirty, befoul; corrupt; violate one's chastity; desecrate; slander”) and befoulen (“to make dirty, befoul; violate one's chastity; vilify”), respectively from Old English befȳlan (“to befoul, pollute, defile, make filthy”) (compare also Middle English filen (“to make foul, impure, or unclean, pollute; pollute morally or spiritually; desecrate, profane; have sexual intercourse with; rape; etc.”)) and foulen (“to make dirty, pollute; become dirty; defecate; deface or deform; pollute morally or spiritually; damage, injure; destroy; treat unfairly, oppress; tread on, trample”). Filen and foulen are respectively from Old English fȳlan (“to befoul, defile, pollute”) and Old English fūlian (“to foul”), from Proto-West Germanic *fūlijan (“to make dirty, befoul”) and *fūlēn (“to become foul, decay”), both ultimately from Proto-Germanic *fūlaz (“dirty, foul; rotten”), from Proto-Indo-European *puH- (“foul; rotten”). See foul. Cognates * German Low German befulen (“to defile, sully”) * Dutch bevuilen (“to defile, soil”) * Scots befile (“to befoul, dirty”) * West Frisian befûjle (“to soil”)

verb/dɪˈfaɪl/Received-Pronunciation/ˈdiː-/Received-Pronunciation/dəˈfaɪl/General-American/ˈdiˌfaɪl/General-American
  1. To march in a single file or line; to file.

    also · archaic · figuratively · intransitive
  2. To march across (a place) in files or lines.

    also · figuratively · obsolete · transitive
Where this word comes from

PIE word *dwís The verb is borrowed from French défiler (“to march; to parade”), from dé- (prefix indicating actions are done more strongly or vigorously) + one or both of the following: * filer (“to thread through (a crowd)”) (from Late Latin filāre, from Latin fīlum (“fibre, filament, string, thread”), ultimately from Proto-Indo-European *gʷʰiH-(s-)lo-). * file (“line of objects placed one after the other, file”), from filer (see above), or fil (“thread, yarn; wire”), from Old French fil, from Latin fīlum (see above). The noun is borrowed from French défilé (“parade, procession”), a noun use of the past participle of défiler (verb); see above.

noun/dɪˈfaɪl/Received-Pronunciation/ˈdiː-/Received-Pronunciation/dəˈfaɪl/General-American/ˈdiˌfaɪl/General-American
  1. A narrow passage or way (originally (military), one which soldiers could only march through in a single file or line), especially a narrow gorge or pass between mountains.

    also · figuratively
  2. An act of marching in files or lines.

    also · figuratively
  3. A single file of soldiers; (by extension) any single file.

    also · figuratively
Where this word comes from

PIE word *dwís The verb is borrowed from French défiler (“to march; to parade”), from dé- (prefix indicating actions are done more strongly or vigorously) + one or both of the following: * filer (“to thread through (a crowd)”) (from Late Latin filāre, from Latin fīlum (“fibre, filament, string, thread”), ultimately from Proto-Indo-European *gʷʰiH-(s-)lo-). * file (“line of objects placed one after the other, file”), from filer (see above), or fil (“thread, yarn; wire”), from Old French fil, from Latin fīlum (see above). The noun is borrowed from French défilé (“parade, procession”), a noun use of the past participle of défiler (verb); see above.

verb/dɪˈfaɪl/Received-Pronunciation/ˈdiː-/Received-Pronunciation/dəˈfaɪl/General-American/ˈdiˌfaɪl/General-American
  1. Synonym of defilade (“to fortify (something) as a protection from enfilading fire”).

    also · figuratively · rare · transitive
Where this word comes from

The verb is borrowed from French défiler (“to arrange soldiers or fortify (something) as a protection from enfilading fire; to unthread”) (compare Middle French desfilher (“to unthread”)), from dé- (prefix meaning ‘not’) + enfiler (“to rake with gunfire, enfilade; to string on to a thread; to thread (a needle)”) (from en- (prefix meaning ‘in, into; on, on to’) + filer (verb) or file (noun); see etymology 2). The noun is derived from the verb.

noun/dɪˈfaɪl/Received-Pronunciation/ˈdiː-/Received-Pronunciation/dəˈfaɪl/General-American/ˈdiˌfaɪl/General-American
  1. An act of defilading a fortress or other place, or of raising the exterior works in order to protect the interior.

    also · figuratively · rare
Where this word comes from

The verb is borrowed from French défiler (“to arrange soldiers or fortify (something) as a protection from enfilading fire; to unthread”) (compare Middle French desfilher (“to unthread”)), from dé- (prefix meaning ‘not’) + enfiler (“to rake with gunfire, enfilade; to string on to a thread; to thread (a needle)”) (from en- (prefix meaning ‘in, into; on, on to’) + filer (verb) or file (noun); see etymology 2). The noun is derived from the verb.

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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.