defenselessness defenselessly • defensibility · · · Info · Definitions · Synonyms · Characters · · defenselessness · · Text Latin · · Script 15 · · Length Definitions · · · (noun) the property of being helpless in the face of attack. Synonyms: defencelessness, unprotectedness. · · Noun Definition 1 Synonyms · · · defencelessness · · Synonym 1 unprotectedness · · Synonym 2 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 f latin small letter f U+0066 l latin small letter l U+006C n latin small letter n U+006E s latin small letter s U+0073