on (your) side

helping you or giving you an advantage.

To get this project approved, you'll need to have Richard on your side.

I thought of a way to get the older boys on my side.

Related vocabulary: time is on your side

• someone's eyes are bigger than their stomach
• someone's eyes are out on stalks
• someone's face doesn't fit
• someone's face is a picture
• someone's glory days
• in store for someone
• in store for something
• in sum
• in summary
• in tandem
• in tandem with
• in tandem with someone
• in tandem with something
• in tatters
• in tears
• intent on
• intent on doing something
• in terms of
• in terms of something
• in that regard
• in the air
• in the altogether
• in the back of beyond
• in the back of mind
• in the back of your mind