D defs.my
Entry 1 sense Webster, 1913

hit it off

· IPA
01 v. i. To get along well together; to be compatible; to work well together; -- of people in interactive situations; as, the new chemist hit it off…
  1. 1.
    To get along well together; to be compatible; to work well together; -- of people in interactive situations; as, the new chemist hit it off immediately with his supervisor.[Colloq.]