煞有介事

shàyǒujièshì

make a show of being in earnest; pretend to be serious (about doing something)

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sha4 you3 jie4 shi4

to pretend to be serious about doing sth (idiom)

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煞有介事

shà yǒu jiè shì

make such a fuss about; in all apparent seriousness; in seeming earnest; pretend to be serious; pull a sanctimonious face; put on such airs; with airs of importance; with seeming (affected) seriousness

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煞有介事|煞有介事 [shà yǒu jiè shì] ► to make a show of being very much in earnest (idiom) ► to act as if one is taking things very seriously