informal be in (someone's) good books - if you are in someone's good books, they are pleased with you.
He's in Melanie's bad books because he arrived 2 hours late.
(redirected from be in bad books)
be in (someone's) bad books
To have fallen out of favor with someone due to having offended or mistreated them. I don't think I'll come to the party on Saturday because I'm in Jenny's bad books at the moment.
be in/get into somebody’s ˈgood/ˈbad books
(informal) have/not have somebody’s favour or approval: I’m in his bad books at the moment because I accidentally broke the window.‘Why are you cleaning her shoes?’ ‘I’m trying to get into her good books!’