harm
noun
physical injury or mental damage; hurt.
harm
1 American
[hahrm]
/ hɑrm /
noun
-
physical injury or mental damage; hurt.
to do him bodily harm.
- Antonyms:
- benefit
-
moral injury; evil; wrong.
verb (used with object)
harms,
present (3rd person singular)
harmed,
past participle, past
harming
present participle
HARM
2
American
[hahrm]
/ hɑrm /
noun
Military.
harm
British
/ hɑːm /
noun
-
physical or mental injury or damage
-
moral evil or wrongdoing
verb
harm
Idioms
Synonym Usage
See damage.
Other Word Forms
Derived Forms
Inflected Forms
Participles
Conjugated Forms
Present
-
harmsimple
-
harmssimple
-
have harmedperfect
-
has harmedperfect
-
am harmingprogressive
-
are harmingprogressive
-
is harmingprogressive
-
have been harmingperfect progressive
-
has been harmingperfect progressive
Past
-
harmedsimple
-
had harmedperfect
-
was harmingprogressive
-
were harmingprogressive
-
had been harmingperfect progressive
Future
Etymology
Origin of harm1
First recorded before 900; Middle English; Old English hearm; cognate with German Harm, Old Norse harmr
Origin of HARM2
H(igh-speed) A(nti) R(adiation) M(issile)
Explanation
Harm is a deliberate injury or damage to someone or something. A playground bully is a mean kid who causes harm to other kids. Harm is both a noun and a verb — when you inflict harm on your brother, you harm him. Physically hurting someone is only one way to harm them. If a classmate spreads a mean rumor about you, that also harms you. The Old English root word is hearm, which means "hurt" and "pain," but also "evil" and "insult."
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
This form of cellular damage is commonly found in the brains of people with Alzheimer's disease and can harm cells throughout the body.
From Science Daily • Jul. 3, 2026
But there’s also no harm in filling one out well before your senior years.
From The Wall Street Journal • Jul. 3, 2026
Santander, Barclays and Lloyds also accepted the scheme, despite raising concerns that the level of redress is disproportionate to those who suffered harm.
From BBC • Jul. 2, 2026
The Society of Professional Journalists’ ethics code emphasizes minimizing harm while also acting in the public interest and holding power accountable.
From Salon • Jul. 2, 2026
I know Jeb never meant any harm, but his words stung me like a bee.
From "The Seven Wonders of Sassafras Springs" by Betty G. Birney
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
