trea
che
rous
ly
1
in a highly dangerous or risky manner
- The river flowed treacherously fast, creating dangerous currents for swimmers.
- The icy road conditions made driving treacherously slippery and hazardous.
- The mountain trail led treacherously along narrow cliff edges, requiring careful navigation.
- The sailors navigated treacherously through the stormy waters, facing high waves and strong winds.
2
in a disloyal and faithless manner
Synonyms: