harmful

[ hahrm-fuhl ]
/ ˈhɑrm fəl /

adjective

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

Origin of harmful

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

Related forms

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for harmful

British Dictionary definitions for harmful

harmful

/ (ˈhɑːmfʊl) /

adjective

causing or tending to cause harm; injurious

Derived Forms

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