treacherous

treach·er·ous

adjective \ˈtre-chə-rəs, ˈtrech-rəs\

Definition of TREACHEROUS

1

: characterized by or manifesting treachery : perfidious

2

a : likely to betray trust : unreliable <a treacherous memory>

b : providing insecure footing or support <treacherous quicksand>

c : marked by hidden dangers, hazards, or perils

— treach·er·ous·ly adverb

— treach·er·ous·ness noun

Examples of TREACHEROUS

1. a treacherous act of betrayal
2. They were not prepared to hike over such treacherous terrain.
3. The snow made their hike all the more treacherous.
4. Discussions about money can lead couples into treacherous territory.

First Known Use of TREACHEROUS

14th century

Related to TREACHEROUS

Synonyms

disloyal, false, fickle, inconstant, perfidious, recreant, traitorous, faithless, unfaithful, untrue

Antonyms

constant, dedicated, devoted, devout, down-the-line, faithful, fast, loyal, staunch (also stanch), steadfast, steady, true

Related Words

irresponsible, trustless, undependable, unreliable, untrustworthy; faltering, hesitant, vacillating, wavering; dubious, irresolute, uncertain; apathetic, dispassionate, uninterested

Near Antonyms

dependable, dutiful, reliable, responsible, solid, tried, tried-and-true, trustable, trustworthy, trusty; unfaltering, unhesitating, unwavering; determined, intent, resolute; confirmed, dyed-in-the-wool, inveterate, sworn; ardent, avid, enthusiastic, fervent, fervid, impassioned, passionate

See Synonym Discussion at faithless

Rhymes with TREACHEROUS

lecherous