Longman Dictionary of Contemporary English - tasteless

~ adj 1 food or drink that is tasteless is unpleasant because it has no particular taste  (The vegetables were tasteless and soggy.) 2 tasteless joke/remark/comment etc a joke etc that is unacceptable in a particular situation 3 made, decorated or chosen with bad taste1 (2)  (a tasteless outfit) - tastelessly adv - tastelessness n