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1. 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. 2. : characterized by or manifesting treachery : perfidious. treacherously adverb. treacherousness noun. Synonyms. disloyal. faithless. false. fickle. inconstant.
(of the ground or the sea) extremely dangerous, esp. because of bad weather conditions: Freezing rain made driving treacherous. treacherous adjective (NOT LOYAL) (of a person) guilty of deceiving someone who trusts you: He was treacherous, or at least sneaky.
(of the ground or the sea) extremely dangerous, esp. because of bad weather conditions: Freezing rain made driving treacherous. treacherous adjective (NOT LOYAL) (of a person) guilty of deceiving someone who trusts you: He was treacherous, or at least sneaky.
characterized by faithlessness or readiness to betray trust; traitorous. Synonyms: treasonous, faithless, unfaithful. Antonyms: loyal. deceptive, untrustworthy, or unreliable. Synonyms: deceitful. Antonyms: reliable. unstable or insecure, as footing. dangerous; hazardous: a treacherous climb. treacherous. / ˈtrɛtʃərəs / adjective.
Synonyms for TREACHEROUS: traitorous, unreliable, false, disloyal, perfidious, faithless, fickle, unfaithful; Antonyms of TREACHEROUS: constant, loyal, true, faithful, steadfast, responsible, steady, fast
dangerous, especially when seeming safe. The ice on the roads made driving conditions treacherous. Definition of treacherous adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
Treacherous means either not trusted or dangerous. A treacherous road might be icy or otherwise likely to cause a car accident. A treacherous friend will betray you. Treachery refers to harmful acts you might do to someone who trusts you.
