follow Dictionary.com

Is irregardless a word?

harmful

[hahrm-fuh l] /ˈhɑrm fəl/
adjective
1.
causing or capable of causing harm; injurious:
a harmful idea; a harmful habit.
Origin of harmful
1000
before 1000; Middle English; Old English hearmful. See harm, -ful
Related forms
harmfully, adverb
harmfulness, noun
quasi-harmful, adjective
quasi-harmfully, adverb
unharmful, adjective
unharmfully, adverb
Synonyms
hurtful, detrimental, damaging, deleterious.
Antonyms
beneficial.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for harmful
Contemporary Examples
Historical Examples
  • Is it not a dreadful thing that one's mind should be thus ruined by a useless and harmful practice?

  • Corporal punishment of schoolboys is only useless and harmful brutality.

    The Sexual Question August Forel
  • Wine is harmful if taken with greedy lips, but if drunk in moderation it is wholesome.

    De Re Metallica Georgius Agricola
  • These are the persons who do the most harm in society, and introduce into it the most harmful taints.

    The Sexual Question August Forel
  • It is utterly worthless to God, and harmful to man; therefore, it must die.

    Sanctification J. W. Byers
British Dictionary definitions for harmful

harmful

/ˈhɑːmfʊl/
adjective
1.
causing or tending to cause harm; injurious
Derived Forms
harmfully, adverb
harmfulness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for harmful
adj.

mid-14c., from harm (n.) + -ful. Related: Harmfully.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for harmful

Some English speakers likely know this word

Word Value for harmful

15
17
Scrabble Words With Friends