CEFR C1

treacherous

adjective

Meaning

Guilty of or involving betrayal or deception; also, presenting hidden dangers or hazards.

Examples

The treacherous ice made driving extremely dangerous, even for experienced drivers.
He felt betrayed by his treacherous ally, who switched sides during the conflict.

Synonyms: disloyal, deceptive, perfidious, hazardous

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treacherous (C1)

adjective

Pronunciation: /ˈtrɛtʃərəs/

Definition

Guilty of or involving betrayal or deception; also, presenting hidden dangers or hazards.

Examples

The treacherous ice made driving extremely dangerous, even for experienced drivers.
He felt betrayed by his treacherous ally, who switched sides during the conflict.
Navigating the treacherous mountain pass required extreme caution and skill.

How to Use treacherous

treacherous to (prepositional phrase): Presenting danger or difficulty to someone or something. — "The icy roads were treacherous to drive on."
treacherous towards (prepositional phrase): Acting disloyally or deceptively towards someone. — "His actions were considered treacherous towards his own country."

Synonyms of treacherous

Words with a similar meaning to treacherous:

Antonyms of treacherous

Words with the opposite meaning to treacherous:

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