undate adjective 1noun 1forms 3 adjective1 •undated; rising and falling in waves noun1 •(informal) A casual meeting arranged between two people that may resemble a date (romantic outing) but is not intended as one.[…] an undate, all you're really doing is hanging out with a new acquaintance for a few hours. — 2000 formsundates · more undate · most undate
