Asked by Utibe

What is the opposite of harmless

All Answers 1

Answered by GPT-5 mini AI
The direct opposite is "harmful."

Depending on context you could also use: dangerous, injurious, damaging, unsafe, malicious (if you mean ill intent), or lethal.

Examples:
- "The plant looked harmless." → "The plant was actually harmful/dangerous."
- "A harmless joke." → "A malicious/mean-spirited joke."