v. 1. To speak in favor or support of. Let's talk up the game and get a big crowd. 2. To speak plainly or clearly. The teacher asked the student to talk up.
Synonym: SPEAK UP. 3. informal To say what you want or think; say what someone may not like. Talk up if you want more pie. George isn't afraid to talk up when he disagrees with the teacher.
Synonym: SPEAK UP.
Compare: SPEAK OUT.