Home › Words › W › weaklinessweaklinessweakliness means the quality of being weakly.Among words judged in Lexicurio's Arena, weakliness ranks #36,091 of 42,762 for Qualifying.EtymologyFrom weakly + -ness.nounThe quality of being weakly.e.g.“But it is certain that a weakliness of body may be induced in a child otherwise indisposed to disease or ailment.” — 1852, Robert Ellis, Disease in Childhood: Its Common Causes, and Directions for Its Practical Management:Definitions & examples from Wiktionary (CC BY-SA 3.0).