cozy_up
1. [ verb ] ingratiate oneself to; often with insincere behavior
Synonyms: shine_up play_up sidle_up suck_up cotton_up
Examples:

"She is playing up to the chairman"

Related terms: ingratiate
Similar spelling:   cook_up
  cock_up
  cough_up
  cockup
  Cozby
  Cosby