Definition

Full of danger or risk; something that can cause harm or injury.

Example

Climbing that mountain without proper gear is a perilous adventure.

Comparatives & Superlatives

Conversation

I heard that rock climbing can be quite perilous if you're not careful.

Yeah, it definitely has its risks, especially without the right gear.

I can't imagine doing it without a harness and proper training.

Exactly! Safety should always come first in any perilous activity.

Synonyms & Antonyms

Root Explanation

Perilous → It is formed from "peril" (from Old French *peril*, meaning danger) and the suffix "-ous" (meaning full of). The word "perilous" means full of danger or risk.

Memory Tip

Think of being 'full of danger' — 'peril' means danger, and '-ous' indicates being full of something.

Visually Confused Words