Definition

The most clever and deceitful in a way that is intended to trick others.

Example

He was the slyest of all the competitors, always finding a way to win without being caught.

Comparatives & Superlatives

Conversation

Did you hear about Jake's prank?

Yeah, it was the sliest thing I've ever seen!

I can't believe he pulled that off without anyone noticing.

Right? He's definitely the sliest of all our friends.

Synonyms & Antonyms

Root Explanation

Sliest → It is formed from "sly" (from Old English *slyh*, meaning cunning or crafty) and the suffix "-est" (meaning the most). The word "sliest" means the most cunning or crafty among others.

Memory Tip

Think of someone who is the 'most cunning' — 'sly' describes being crafty, and '-est' indicates the highest degree.

Visually Confused Words