Butter up and Work on

Butter up verb - To praise too much.

Work on and butter up are semantically related in charm someone with flattery topic. In some cases you can use "Work on" instead a verb "Butter up".

Work on verb - To exert effort in order to do, make, or perform something.

Butter up and work on are semantically related in persuade topic. You can use "Butter up" instead a verb "Work on", if it concerns topics such as charm, flatter, coax, talk into.