Stridulate is a term used to describe the sound made by certain insects and animals, such as crickets, grasshoppers, and cicadas. The term is derived from the Latin word stridulus, which means 'to creak or squeak.' The crossword solution for stridulate is 'CHIRP, ' which is an onomatopoeia for the sound made by these creatures. Chirping is a common sound heard in nature, and is often associated with summertime.