1. To speak (about someone or something) in a particularly boastful or arrogant manner. My date kept spouting off about how important she is in her job and how much money she makes, never even asking what I do for a living.
2. To speak for a tedious or exasperating length of time. My father in law never fails to spout off about his various journeys around the world whenever we see him. I always let my mind wander whenever Dan starts spouting off about politics like that.
3. To utter something in a brash, unwelcome, or unpleasant manner. Dan, please stop spouting off intimate details about our private life like that—we're in a public restaurant! He spouted off some very technical, longwinded answer that made absolutely no sense whatsoever.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
spout off(about someone or something)
1. to brag or boast about someone or something. Stop spouting off about Tom. Nobody could be that good! Alice is spouting off about her new car.
2. to speak out publicly about someone or something; to reveal information publicly about someone or something. I wish you wouldn't spout off about my family affairs in public. There is no point in spouting off about this problem.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
1. To speak continuously and tediously: I dread spending an evening with my cousins and listening to them spout off about their last vacation.
2. To utter something that is long-winded and tedious: I'd hoped for a simple answer, but the mechanic spouted off a technical explanation that confused me even more. The tour guides have to memorize the speech until they can spout it off without effort.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.