Meaning of the word treacherously in English

What does treacherously mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

treacherously

US /ˈtretʃ.ɚ.əs.li/
UK /ˈtretʃ.ɚ.əs.li/

Adverb

1.

in a way that is extremely dangerous, especially because of bad weather conditions:

Example:
The sidewalk was treacherously icy.
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