THESAURUS
assailability, blemish, bug, catch, chink, crack, defect, defection, deficiency, drawback, failing, failure, fault, faute, flaw, foible, frailty, heel of Achilles, hole, imperfection, inadequacy, infirmity, kink, little problem, penetrability, pregnability, problem, rift, shortcoming, snag, soft spot, something missing, taint, vincibility, vulnerability, vulnerable place, vulnerable point, weak point, weakness
