all for (someone or something)
In full favor or support of someone or something. I'm all for eating healthy foods, but I just can't stand the taste of broccoli. A: "The project needs a serious overhaul." B: "Look, we're all for it, but it all depends on whether or not the boss agrees." Pretty much everyone you talk to seems all for the new mayor, so she must be doing a good job.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
Completely in favor of something or someone, as in I'm all for eating before we leave, or The players are all for the new soccer coach. This colloquial phrase was first recorded in 1864.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.