deadliness deadline • deadlock · · · Info · Definitions · Synonyms · Characters · · deadliness · · Text Latin · · Script 10 · · Length Definitions · · · (noun) the quality of being deadly. Synonyms: lethality. · · Noun Definition 1 Synonyms · · · lethality · · Synonym 1 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E s latin small letter s U+0073