off-color (US) adjective
or British off-colour /ˈɑːfˈkʌlɚ/ or US off-colored or British off-coloured /ˈɑːfˈkʌlɚd/ or British off-colour /ˈɑːfˈkʌlɚ/ or US off-colored or British off-coloured /ˈɑːfˈkʌlɚd/ Learner's definition of OFF-COLOR
[more off-color; most off-color]
1
not used before a noun : feeling somewhat ill : not quite well身体不舒服;精神欠佳 2
chiefly US : not socially acceptable : indecent or improper粗俗的;不礼貌的