harmful
Causing or likely to cause harm or damage; injurious.
Example
“Wear a hat to protect your skin from harmful sunlight.”
Antonyms
- beneficial
- harmless
Related words
- harmfully
- harmfulness
- nonharmful
- unharmful
Word history
From Middle English "harmful".
Where this comes from
This definition is adapted from “harmful” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.