2026

Harmful

//ˈhɑːmfl̩//

Definitions

adjharmfuller · more harmful · harmfullest · most harmful

1
Causing or likely to cause harm or damage; injurious.
Wear a hat to protect your skin from harmful sunlight.
Similar
injurious harmful damaging

Word Origin

From Middle English harmful, from Old English *hearmful (suggested by hearmfullīċ (“harmful; hurtful”)), equivalent to harm + -ful. Cognate with German harmvoll, Danish harmfuld, Swedish harmfull.

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