What does treacherously mean?
Treacherously means In a treacherous manner..
Pronunciation varies by accent · adverb
In a treacherous manner..
The former spy behaved treacherously.
Choose a synonym only when it preserves the intended meaning, tone, and grammar of the full sentence.
Treacherously means In a treacherous manner..
Common synonyms include dastardly, disloyally, false, falsely.
Possible antonyms include faithfully, loyally.
The former spy behaved treacherously.
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