1. not prudent or wise - very imprudent of her mother to encourage her in such silly romantic ideas - "would be imprudent for a noneconomist to talk about the details of economic policy"- A.M.Schlesinger • Ant: prudent • Similar to: ill-considered, ill-judged, improvident, shortsighted, injudicious, rash • See Also: careless, foolish, improvident • Derivationally related forms: imprudence 2. lacking wise self-restraint - an imprudent remark • Similar to: indiscreet • Derivationally related forms: imprudence