The term "motor mouths" refers to individuals who talk excessively or continuously. There are various synonyms for this term, including chatterboxes, gabbers, blabbermouths, yakkers, talkative ones, and gossips. Other synonyms that can be used include verbose, loquacious, garrulous, or voluble. However, these terms tend to imply that the individual is more articulate and engaging in their speech rather than just incessant. Other descriptive terms for someone who talks a lot include windbag, jabberer, and prattler. Additionally, the terms "yapper" or "yakety-yak" can be used in a more playful or lighthearted way when referring to someone who talks a lot.