harmful
Americanadjective
adjective
Other Word Forms
- harmfully adverb
- harmfulness noun
- quasi-harmful adjective
- quasi-harmfully adverb
- unharmful adjective
- unharmfully adverb
Etymology
Origin of harmful
First recorded before 1000; Middle English; Old English hearmful; harm, -ful
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.
Microbes that remove methylamines before they reach the liver help limit the production of this potentially harmful molecule.
From Science Daily
And those habits can be especially harmful for the many people in this unevenly wealthy cohort who are financially vulnerable.
From MarketWatch
It could decide to investigate on their behalf and force member states to take action - notable examples involving Wales included addressing emissions of harmful pollutants from Aberthaw coal-fired power station in the Vale of Glamorgan.
From BBC
They said the watchdog's online safety rules require tech firms to tackle illegal content and protect children from harmful material - including abusive or hateful content.
From BBC
The move is the latest example of how tech companies are responding to concerns from parents, politicians and advocacy groups that they’re not doing enough to protect young people from harmful content.
From Los Angeles Times
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.
