pantywaist noun 2adjective 1forms 1 noun2 •(old-fashioned) An undergarment composed, in part, of panties attached to a waistband.Lace trimmed panty waists—50 cents. — 1929 •(informal, offensive) An ineffectual, weak, or timid person, especially a boy or young man; a sissy. adjective1 •(informal) Weak, timid, effeminate, ineffectual.His rough, burly father was mortified by the lad's pantywaist behavior. formspantywaists
