treacherous

[trech-er-uhs] / ˈtrɛtʃ ər əs /

ADJECTIVE

dishonest, disloyal

Synonyms

STRONGEST

slippery tricky unreliable

WEAK

betraying catchy deceitful deceptive double-crossing double-dealing duplicitous faithless false false-hearted fly-by-night insidious misleading perfidious recreant shifty slick snake in the grass traitorous treasonable two-faced two-timing undependable unfaithful unloyal untrue untrustworthy

Antonyms

STRONGEST

honest reliable

WEAK

forthright harmless loyal true untreacherous

ADJECTIVE

dangerous

Synonyms

STRONGEST

difficult hazardous icy ominous perilous precarious risky slippery ticklish tricky unreliable unsafe unstable

WEAK

alarming chancy deceptive dissembled faulty hairy insecure jeopardous menacing misleading shaky undependable unhealthy unsound wicked

Antonyms

STRONGEST

certain definite easy friendly honest protected reliable safe secure stable straightforward strong sure uncomplicated

WEAK

forthright harmless loyal true untreacherous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Answering that question is more treacherous than usual.

From The Wall Street Journal • Apr. 1, 2026

The National Weather Service said blizzard conditions would "quickly materialize" from Maryland up to southeastern New England, making travel "extremely treacherous."

From Barron's • Feb. 22, 2026

Tuesday, setting off a challenging rescue operation in treacherous, remote, freezing conditions, eventually reaching the six survivors around 5:30 p.m.

From Los Angeles Times • Feb. 19, 2026

According to Curtis, the discovery coincides with 30 years since the Sea Empress oil spill, highlighting how "treacherous" Pembrokeshire waters can be.

From BBC • Feb. 17, 2026

And only he knew exactly how treacherous this endeavor might prove.

From "Six of Crows" by Leigh Bardugo

treacherous

Example Sentences

Related Words