harmful

[ hahrm-fuhl ]
/ ˈhɑrm fəl /
See synonyms for: harmful / harmfully on Thesaurus.com

adjective

causing or capable of causing harm; injurious: a harmful idea; a harmful habit.

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Origin of harmful

before 1000; Middle English; Old English hearmful.See harm, -ful

OTHER WORDS FROM harmful

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for harmful

British Dictionary definitions for harmful

harmful
/ (ˈhɑːmfʊl) /

adjective

causing or tending to cause harm; injurious

Derived forms of harmful

harmfully, adverbharmfulness, 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