side against (one)
To take the opposing side of one in an argument, dispute, or conflict. I'm afraid the board of directors has sided against you in this case—we'll be expecting your resignation directly. You always side against me when your mother starts to criticize me.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
side against someone
to be against someone; to take sides against someone. I thought you were my friend! I never thought you would side against me! The two brothers were always siding against their sister.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
Refuse to support, oppose in a dispute, as in The older club members sided against the new program director and her strenuous exercise programs . [First half of 1700s] For the antonym, see side with.
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.
To align oneself against someone or something in a disagreement: Our opponents will side against the proposal if we don't revise it.
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.