be (all) for (someone or something)
To support or be in favor of a person, group, or effort. If management is considering adding a gym to the building, I'm all for it! I respect your opinion, but I'm for the other candidate. I don't know about the rest of you, but I'm all for going on a hike!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
be for someone or somethingand be for doing something
supporting or in favor of someone or something. I'm for abandoning the scheme. Mary is running for office, and the whole family is for her.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
To be in favor of something or someone: I'm definitely not for cutting down the trees; we need the shade. Are you for these candidates, or against them?
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.