1 Select all the correct answers. treacherous tréch'or-osl adj 1. hazardous 2. characterized by unfaithfulness 3. unstable or insecure Which two sentences use definition 2 of the word treacherous? (1) Kane's treacherous decision to reveal his team's strategy created a problem. Mother warned Jim to be cautious while riding on the treacherous roads. Harry's treacherous nature made it hard for him to make new friends. Ruth escaped a treacherous bike accident You cannot trust Mrs Crow's treacherous memory.