Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun harmfulness

2 senses of harmfulness

Sense 1
harmfulness, injuriousness -- (destructiveness that causes harm or injury)
       => destructiveness -- (the quality of causing destruction)

Sense 2
harmfulness, noisomeness, noxiousness -- (the quality of being noxious)
       => unwholesomeness, morbidness, morbidity -- (the quality of being unhealthful and generally bad for you)