You searched for: “dum felis dormit
Dum felis dormit, mus gaudet et exsilit antro.
When the cats fall asleep, the mouse rejoices and leaps from his hole.

Latin idiom: The Roman mouse rejoicing is father to the French mice dancing and the English mice playing.

This entry is located in the following units: dorm-, dormi- (page 2) gaud- (page 1) Latin Proverbs, Mottoes, Phrases, and Words: Group D (page 4)