keep (you) posted

to make sure you know what is happening.

The doctors kept me posted about her condition.

Usage notes: usually refers to a situation that is quickly changing

• cool customer
• cool down
• cool head
• cool heels
• Cool it!
• cool it
• cool your heels
• cop a feel
• cop a plea
• cop it sweet
• copper-bottomed
• cop some z's
• cordon bleu
• corner the market
• corridors of power
• cost an arm and a leg
• cost a pretty penny
• cost dear
• cost someone an arm and a leg
• cost someone a pretty penny
• cost someone dear
• cotton-picking
• cotton to
• cotton to someone
• cotton to something