Synonyms for the adjective treacherous are traitorous, treasonous, disloyal, faithless, unfaithful, false, insidious, or deceitful.
the answer for another word for not to be trusted is treacherous
Another word for "insidious" is the word "treacherous"[or "sly",or "crafty"].
Synonyms for the adjective treacherous are traitorous, treasonous, disloyal, faithless, unfaithful, false, insidious, or deceitful.
The Latin word for treacherous is perfidus.Latin was the language spoken by the Romans.
-ous
It was a treacherous hike to the top of the mountain.
betrayer, deserter, conspirator.Benedict Arnold, Judas.Renegade, betrayer.
treacher
Treacherous
dangeroushazardousominousperilousprecariousriskyunsafe
The word treacherous is an adjective. It describes someone who exhibits treachery.
Disloyal dastardly