deadliness

D2E1A1D2L1I1N1E1S1S1
UK/ˈdɛdlɪnəs/

noun

The quality of being deadly.

Similar
fatalitylethality
OriginMiddle English dedlinesse ← Old English dēadlīcnes →
Scrabble 12
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

noundeadliness (usually uncountable, plural deadlinesses)

plural deadlinesses

  1. Synonym of lethality.
    1. uncountableusuallyThe quality of being deadly.

      Synonyms: fatality

    2. uncountableusuallyThe degree to which a thing is deadly.
  2. excessivefigurativelyuncountableusuallyTedium, or the quality of being boring.

Synonyms & antonyms

nounThe quality of being deadly.

Similar
fatality

More synonyms by meaning

nounthe quality of being deadly

Similar
lethality
Broader
unwholesomenessmorbidnessmorbidity
Also see
lethalitymortality

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Old Englishdēadlīcnes
  2. Middle Englishdedlinesse
  3. Englishdeadliness

From Middle English dedlinesse, deadlicnesse, from Old English dēadlīcnes, equivalent to deadly + -ness.

More words from Middle English, Old English

Full word history & related roots →
Cite this entry
APA

deadliness. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/deadliness

MLA

“deadliness.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/deadliness. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “deadliness,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/deadliness.

Source: deadliness on Wiktionary, CC BY-SA 4.0.