po-faced
adjective /ˌpəʊ ˈfeɪst/
/ˌpəʊ ˈfeɪst/
(British English, informal, disapproving)- looking very serious and as though you do not approve of somebody/something
一本正经的;不以为然的;孤傲的;板着脸的 词源1930s: perhaps from po ‘chamber pot’, influenced by poker-faced.