Yawnfest is an annual event that celebrates the art of napping. It is held in various cities around the world and features activities such as pillow fights, nap-offs, and SNORE-offs. The term 'yawnfest' is derived from the word 'YAWN, ' which is a sign of tiredness or boredom, and the word 'FESTIVAL, ' which is a celebration. The crossword solution for the term 'yawnfest' is SNORE, which is a sound made when someone is sleeping.