JLPT N1 - MOCK3 VOCABULARY

彼は___なことにも動じない、落ち着いた人物だ。

💡 Detailed Explanation

"些細なこと" (sasai na koto) refers to trivial, insignificant matters. "微細" (bisai) means very small in size, "些末" (samatsu) is similar to "些細" but "些細" is more commonly used in daily conversation and applies to a wider range of "unimportant matters." "末梢" (masshō) refers to something peripheral or minor, not central to the main issue.