Kokoro, by Natsume Soseki (paragraph #1085)

父は苦い顏をした。

translation

My father made a bitter face.

kanji (pronunciations & definitions)
: father (あて), father (かそ), father (かぞ), father (しし), father (ちち) : pain (く), anguish, suffering, distress, anxiety : face (かお), face (がん), visage, visage, look

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