Swinging rhythm is a type of musical rhythm characterized by a LILT or swaying motion. It is often used in jazz and swing music, and is created by playing off-beat notes or syncopated rhythms. The term 'swinging rhythm' can also be used to describe the feeling of a song or performance that has a lively, upbeat tempo. The crossword solution for this term is 'LILT, ' which is defined as a gentle, rhythmic swaying or rocking motion.