countenance

the appearance conveyed by a person's face; "a pleasant countenance"; "a stern visage"

formal and explicit approval; "a Democrat usually gets the union's endorsement"

the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)

consent to, give permission; "She permitted her son to visit her estranged husband"; "I won't let the police search her basement"; "I cannot allow you to see your exam"