Killing time' is an expression used to describe the act of passing time in an unproductive or leisurely manner. The crossword solutions for this term are IDLE (4 letters), LOAF (4 letters), LOITER (6 letters), SITONONESHANDS (14 letters), DONOTHINGUSEFUL (15 letters), and FRITTERAWAYTIME (15 letters). All of these words describe activities that can be done to pass time without accomplishing anything meaningful.