deadliness
noun
- quality of being deadly/fatal
Wiktionary
Pronunciation: /ˈdɛdlɪnəs/
noun
Etymology: From Middle English dedlinesse, deadlicnesse, from Old English dēadlīcnes, equivalent to deadly + -ness.
- Synonym of lethality.
- Synonym of lethality.
- Tedium, or the quality of being boring.