loquacious (adj) - talking or tending to talk too much or too freely [loh-kwey-shuhs]
BREAKDOWN: LOQU- (speak) + -ACIOUS (inclined to)
loquacity and loquaciousness describe the quality or state of being excessively talkative
See also: eloquence
“I prefer silent prudence to loquacious folly.” —Marcus Tullius Cicero