side with (someone)

to agree with or support someone.

When workers have sued companies for violating their privacy, judges have usually sided with the employer.

Usage notes: the opposite meaning is expressed by side against someone - to disagree with or not support someone:

As much as I hate to side against a friend, I feel she is wrong.

Related vocabulary: take sides

• roll out the red carpet for someone
• roll over
• roll over in grave
• roll over in someone's grave
• roll over something
• roll sleeves up
• roll up sleeves
• roll up your sleeves
• roll with it
• roll with the punches
• roll your sleeves up
• Rome wasn't built in a day.
• roof caves in
• roof falls in
• roof over head
• roof over your head
• room to swing a cat
• root and branch
• root-and-branch
• as a rule
• as as they come
• a saving grace
• as a whole
• as best as can
• as best as you can