treacherous

English

Etymology

From Old French trecheros, tricheros (“deceitful”). See treacher.

Pronunciation

IPA^(key): /ˈtɹɛtʃəɹəs/, /ˈtɹɛtʃɹəs/
Audio (US) (file)

Adjective

treacherous (comparative more treacherous, superlative most treacherous)

Exhibiting treachery.
Deceitful; inclined to betray.
Unreliable; dangerous.
a treacherous mountain trail

Antonyms

(exhibiting treachery): loyal

Related terms

Translations

exhibiting treachery

Czech: zrádný m
Dutch: verraderlijk (nl)
Finnish: petollinen (fi)
French: traître (fr)
Georgian: მოღალატური (moɣalaṭuri), გამცემლური (gamcemluri)
German: verräterisch
Greek: προδοτικός (el) m (prodotikós), δόλιος (el) m (dólios)
Ancient: δολερός (dolerós)
Hungarian: áruló (hu)

Irish: fealltach, cealgach
Italian: traditore (it) m, sleale (it) m, infido (it) m
Norwegian:
Bokmål: forrædersk
Polish: zdradziecki (pl)
Portuguese: fementido (pt), traiçoeiro (pt) m
Russian: вероло́мный (ru) (verolómnyj), преда́тельский (ru) (predátelʹskij)
Spanish: traicionero (es) m

deceitful; inclined to betray

Czech: zrádný m
Finnish: petollinen (fi)
French: traître (fr)
Georgian: გამცემლური (gamcemluri)
German: verräterisch

Greek: δόλιος (el) m (dólios), επίβουλος (el) m (epívoulos)
Hungarian: álnok (hu)
Irish: fabhtach, braiteach
Latin: perfidus
Russian: вероло́мный (ru) (verolómnyj), кова́рный (ru) (kovárnyj)

unreliable; dangerous

Czech: zrádný m
Finnish: petollinen (fi)
French: traître (fr)
Georgian: მუხანათური (muxanaturi)
German: tückisch (de)

Greek: ύπουλος (el) m (ýpoulos)
Norwegian:
Bokmål: forrædersk
Russian: ненадёжный (ru) (nenadjóžnyj), непро́чный (ru) (nepróčnyj),
Spanish: traicionero (es) m

Further reading

treacherous in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
treacherous in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
treacherous at OneLook Dictionary Search

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