行动 (xíngdòng) is a versatile word meaning 'action' as a noun and 'to act' or 'to take action' as a verb. The first character 行 (xíng) means 'to go', 'to carry out', or 'to conduct', while 动 (dòng) means 'to move' or 'to stir'. Together, they convey the idea of purposeful movement or doing something — not just physical motion, but deliberate, goal-oriented activity. It’s commonly used in contexts like planning, responding to problems, making decisions, or initiating change.

This word carries a formal or serious tone and often appears in written Chinese, news reports, official announcements, or motivational speech. It implies intentionality and responsibility — for example, 'taking action against climate change' or 'the government’s emergency action'. Unlike casual verbs like 做 (zuò, 'to do'), 行动 emphasizes urgency, coordination, or consequence, and is rarely used for trivial daily tasks like 'making tea' or 'brushing teeth'.