一本正經 (jat1 bun2 zing3 ging1) — in all seriousness; in dead earnest in Cantonese
jatˉ¹一bunˊ²本zing˗₃正gingˉ¹經简 一本正经
Mandarin Pinyin: yi1 ben3 zheng4 jing1
Meaning of 一本正經
nounin all seriousness; in dead earnest
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