Also found in: Thesaurus, Medical, Legal, Encyclopedia, Wikipedia.


Causing or capable of causing harm; injurious.

harm′ful·ly adv.
harm′ful·ness n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.harmfulness - destructiveness that causes harm or injury
destructiveness - the quality of causing destruction
insidiousness - subtle and cumulative harmfulness (especially of a disease)
virulence, virulency - extreme harmfulness (as the capacity of a microorganism to cause disease); "the virulence of the plague"
2.harmfulness - the quality of being noxious
unwholesomeness, morbidness, morbidity - the quality of being unhealthful and generally bad for you
References in classic literature ?
The talk continued on the same subject for a long time--the harmfulness of a household dividing up--and it was clearly not an abstract discussion but concerned the question of a separation in that house; a separation demanded by the second son who sat there morosely silent.
A Public Health England (PHE) report highlights that public misunderstanding of the harmfulness of nicotine containing products, such as nicotine replacement therapy (NRT) and e-cigarettes, may be linked to inaccurate and confused perception of the risks of nicotine.
They expressed the view that much more could be done in this segment in order to protect and inform the citizens about the pollution and its harmfulness, in accordance with the European standards.
Study findings published last month appear to challenge long-held beliefs on the harmfulness of fat in diet, naming high carbohydrate intake as a bigger culprit in the risk of developing heart diseaseDIETbrThe PURE research is a large study of individuals aged 35-70 years who were enrolled between January 1, 2003, and March 31, 2013, in 18 countries with an average follow-up period of 7.
Also included are plans for studies into the possible harmfulness of sanitary pads, after a scandal erupted over alleged side effects caused by a certain manufacturer's product.
This desensitization to the harmfulness of hate speech was in turn a risk factor of greater prejudice.
But their harmfulness or otherwise is usually best judged by the people they attempt to describe.
And yet, trapped in their own bargain with terrorism and extremism, some Arab leaders have consistently shied away from tackling Washington's harmfulness head-on.
Together with its increasing harmfulness and expansion of affected scope, the mounting number of false news has become a recent phenomenon that draws the attention of leaders, experts and scholars at all levels, and sparks targeted discussion and analysis (Gao, 2013; Chen, 2010; Gao, 2013).
in researching views on offensive language, Ofcom have not made judgments on the harmfulness of particular words in society.
Excluding alcohol from the UN schedules has more to do with political expediency and alcohol's culturally sanctioned status than concern for its addiction potential or harmfulness.
At the University of Florida, a sample of 852 college students completed a survey, which applied the health belief model (Sharma, 2017), assessing their demographics, smoking behavior and knowledge of hookah's harmfulness.