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Grave harmfulness or deadliness
Answer for the clue "Grave harmfulness or deadliness ", 14 letters:
perniciousness
Word definitions for perniciousness in dictionaries
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Pernicious \Per*ni"cious\, a. [L. perniciosus, from pernicies destruction, from pernecare to kill or slay outright; per + necare to kill, slay: cf. F. pernicieux. Cf. Nuisance , Necromancy .] Having the quality of injuring or killing; destructive; very ...
WordNet
Word definitions in WordNet
n. grave harmfulness or deadliness [syn: toxicity ]
Wiktionary
Word definitions in Wiktionary
n. The condition of being pernicious; destructiveness
Usage examples of perniciousness.
The utter perniciousness of romantic love couldn't be more obvious in his case.
They forgot the perniciousness of habit—of the habit of having decisions made for you.