The word treacherous is an adjective. It describes someone who exhibits treachery.
noun
Panic mongers and rumour-mongers
That man is treacherous
adverb
what part of speech is work
The treacherous ice is best to avoid The treacherous path through the woods had never been traveled before.
Panic mongers and rumour-mongers
That man is treacherous
part of speech
The part of speech for this particular word is a noun.
what part of speech is beneath
what part of speech is work
adverb
The roads were treacherous because of the snowstorm.
the part of speech sashay is a averb
"Did not" or "didn't" is a contraction of the auxiliary verb "did" and the adverb "not," forming a negative past tense construction in English.
The treacherous ice is best to avoid The treacherous path through the woods had never been traveled before.
This example of how to use treacherous in a sentence is treacherous. The raging storm on the ocean was treacherous with fifty foot waves. No one could travel on the ocean. When the treacherous hurricane subsided the Coast Guard found many boats damaged and ships were sunk.