compliment on

compliment (someone) on (something)

To praise someone for something specific. I have to compliment you on this dinner you made—it's just delicious! The salesman just complimented me on my beautiful smile!See also: compliment, on

compliment someone on something

to say something nice to someone about something connected to that person. I was pleased with Alice's work and complimented her on it. They complimented me on my new tie.See also: compliment, on