Kokoro, by Natsume Soseki (paragraph #937)

「少し先生にかぶれたんでせう」

translation

"I guess I got a little mad at the teacher."

kanji (pronunciations & definitions)
: small (しょう), little, few 先生: teacher (せんせい), instructor, master, sensei, title or form of address for a teacher, master, doctor, lawyer, etc.

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