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Causing or capable of causing harm; injurious.

harm′ful·ly adv.
harm′ful·ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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.
AI is applied to collect information from various media contents to analyze the harmfulness and authenticity of the data.
The material was commonly used in all sorts of construction and mechanical works until the full extent of its harmfulness was discovered.
Many doctors previously believed that hepatitis C, for all its harmfulness, activates the immune system when it infects the liver, and the immune system kept liver cancer recurrence at bay.
The awakening of the world to the harmfulness of diesel engine emissions has accelerated the electrification of heavy vehicles.
Amid growing concerns that Korea may follow suit, the health authority plans to patrol local cigarette retail stores with police to highlight the harmfulness of the new products and inform store owners not to sell them to teenagers.
He was accompanied by Lahore Commissioner Mujtaba Piracha and Deputy Commissioner Ms Saleh Saeed while distributing cloth bags among the shoppers to create awareness about the harmfulness of polythene bags.
of the crime and the harmfulness of the offense's consequences.
The authors analyzed the connection between the number of conducted CT examinations of children and answers to questions that each survey's section consisted of: about explanation of CT examination's aim, harmfulness of ionizing radiation, about the possibility of a consultation with a radiologist, a question related to documentation in a child's health certificate and the request for comparison of radiation dose between chest X-ray and chest CT examination with contrast, head CT examination with contrast and abdomen and pelvis CT with contrast.
Awareness raising campaign about the harmfulness of burning tires or plastic is being held regularly, said the heads of districts of the city.