English edit

Alternative forms edit

Etymology edit

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.

Pronunciation edit

Adjective edit

harmful (comparative harmfuller or more harmful, superlative harmfullest or most harmful)

  1. of a kind likely to be damaging; injurious
    Wear a hat to protect your skin from harmful sunlight.

Synonyms edit

Antonyms edit

Derived terms edit

Collocations edit

Translations edit

See also edit