harm

UK: /ˈhɑː^rm/ US: /hɑrm/ ,(härm)

WordReference Random House Learner's Dictionary of American English © 2025

harm /hɑrm/   n. [uncountable]

1. injury or damage;
   hurt:
   to do someone bodily harm.
2. moral injury;
   evil;
   wrong:
   That proposal will do more harm than good.

v. [~ + object]

3. to do or cause harm to:
   to harm one's reputation.

WordReference Random House Unabridged Dictionary of American English © 2025

harm  (härm), n. 

1. physical injury or mental damage;
   hurt:
   to do him bodily harm.
2. moral injury;
   evil;
   wrong.

v.t. 

3. to do or cause harm to;
   injure;
   damage;
   hurt:
   to harm one's reputation.

• bef. 900; Middle English; Old English hearm; cognate with German Harm, Old Norse harmr

harm′er, n. 
Synonyms

• 1, 2. See damage. 
• 3. maltreat, abuse.

Antonyms

• 1. benefit.
• 3. help.

HARM  (härm), n. [Mil.]

1. Military a U.S. air-to-surface missile designed to detect and destroy radar sites by homing on their emissions.

• H(igh-speed) A(nti) R(adiation) M(issile)

Collins Concise English Dictionary © HarperCollins Publishers::

harm / hɑːm/ noun

1. physical or mental injury or damage
2. moral evil or wrongdoing

verb

1. (transitive) to injure physically, morally, or mentally

Etymology: Old English hearm; related to Old Norse harmr grief, Old High German harm injury, Old Slavonic sramǔ disgrace