treacherous
English · Thesaurus
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treacherous
- /ˈtɹɛt͡ʃəɹəs/
- /ˈtɹɛt͡ʃɹəs/
Where it comes from
From Old French trecheros, tricheros (“deceitful”), equivalent to treacher + -ous. See treacher.
adjective more treacherous · most treacherous
-
Exhibiting treachery.
I see the wife misused by her husband, I see the treacherous seducer of young women, / I mark the ranklings of jealousy and unrequited love attempted to be hid […]
Opposite: loyal
-
Deceitful; inclined to betray.
Similar: Judaslike, perfidious, traitorous, beguiling, deceitful, deceptious, deceptive, deceptory, fallacious, fraudful, fraudulent, mendacious
-
Unreliable; dangerous.
a treacherous mountain trail
Similar: hazardous, perilous, unsound, dangerous, dangersome, hot, jeopardous, wicked, forbidding, parlous, periculous, precarious
Similar: booky, dastardly, disleal, disloyal, double-crossing, double-dealing, double-faced, double-hearted, doublehearted, faithless, false, falseheart, false-hearted, guiled, guileful, hollow-hearted, illoyal, infidelitous, insidious, Judaslike, Judasly, nonfaithful, perfidious, proditorious, proditory, Punic, ratlike, recreant, renegade, reptilian · Opposite: faithful, fidelitous, leal, loyal, steadfast, true, untraitorous, untreacherous
Thesaurus
Closest in meaning: perfidious, unfaithful, dangerous, unsafe, unreliable, punic, traitorous, traitor, tricksy, insidious, scheming, deadbeat, villainous, wicked, malicious, risky
adjective
Similar: booky, dastardly, disleal, disloyal, double-crossing, double-dealing, double-faced, double-hearted, doublehearted, faithless, false, falseheart, false-hearted, guiled, guileful, hollow-hearted, illoyal, infidelitous, insidious, Judaslike, Judasly, nonfaithful, perfidious, proditorious, proditory, Punic, ratlike, recreant, renegade, reptilian · Opposite: faithful, fidelitous, leal, loyal, steadfast, true, untraitorous, untreacherous
Translations
Every language
adj exhibiting treachery
| Español | traicionero, alevoso, aleve |
|---|---|
| Português | fementido, traiçoeiro |
| Français | traître |
| Deutsch | verräterisch, trügerisch |
| Italiano | traditore, sleale, infido |
| Ελληνικά | προδοτικός prodotikós, δόλιος dólios |
| Русский | вероло́мный verolómnyj, преда́тельский predátelʹskij |
adj deceitful; inclined to betray
| Português | traiçoeiro |
|---|---|
| Français | traître |
| Deutsch | verräterisch, hinterlistig, doppelzüngig |
| Ελληνικά | δόλιος dólios, επίβουλος epívoulos |
| Русский | вероло́мный verolómnyj, кова́рный kovárnyj |
adj unreliable; dangerous
| Español | traicionero |
|---|---|
| Português | traiçoeiro |
| Français | traître |
| Deutsch | tückisch |
| Ελληνικά | ύπουλος ýpoulos |
| Русский | ненадёжный nenadjóžnyj, непро́чный nepróčnyj |
Talk about this word "treacherous." Wiktionary, via Micwyn, micwyn.com/word/treacherous. Accessed 6 Nov. 2026. treacherous. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/treacherous "treacherous." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/treacherous.Cite this
@misc{treacherous_2026,
title = {treacherous},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/treacherous},
urldate = {2026-11-06}
}
