Her impatience with the slow progress led her to take matters into her own hands.

impatience 是由前缀 im-（表示"否定"）和名词 patience（耐心）组成的复合词。patience 来自拉丁语 patientia，意为"忍耐、耐心"。 impatience 字面意思是"缺乏耐心"，指"不耐烦、急躁"的情绪状态。