Definition

In a way that is dangerous or not trustworthy, often involving betrayal or deceit.

Example

He treacherously revealed their secrets to the enemy.

Conversation

Did you see how the path was treacherously slippery after the rain?

Yeah, I almost slipped a couple of times!

It really caught me off guard while I was hiking.

I know, right? You have to be super careful in those conditions.

Synonyms & Antonyms

Root Explanation

Treacherously → It is formed from "treacherous" (from Old French *trechereus*, meaning deceitful or untrustworthy) and the suffix "-ly" (meaning in a manner of). The word "treacherously" means in a deceitful or untrustworthy manner.

Memory Tip

Think of someone acting in a deceitful way ('treacherous') and doing so 'in a manner' ('-ly'). This helps you remember that 'treacherously' describes actions that are untrustworthy.

Visually Confused Words