Also,
be in with
;
get on someone's good side
. Be in someone's favor, be well liked by someone. For example,
He's in good with the higher-ups so we can expect approval of our application
, or
I'd love to be in with that popular crowd, but I don't quite know how
, or
I don't know how he got on her good side after that fight they had
. The first two terms date from the 1900s, the third from the late 1600s. Also see