ichidan verb, intransitive verb
be perturbed; be agitated; lose composure
Describes a person who is emotionally shaken or disturbed by something, often used in negative potential forms like 動じない to mean 'unflappable' or 'unmoved'.
彼はどんなことにも動じない。
He is unperturbed by anything.
その知らせを聞いても彼女は少しも動じなかった
Even after hearing the news, she was not the least bit agitated.