Flaccid/ˈflæsɪd/ Definition 1 of 3Pro Tip 1/2Physical Condition Use 'flaccid' to describe body parts that appear weak or without strength. The patient's arm felt flaccid after the cast was removed. Pro Tip 2/2Emotional Impact 'Flaccid' can imply a negative feeling toward something that lacks vitality or strength. The overcooked noodles were disappointingly flaccid.