充足 means 'ample' or 'plentiful', especially when referring to resources that are sufficient in quantity or degree — most commonly time, energy, funds, or supplies. The character 充 (chōng) conveys 'to fill' or 'to be full', while 足 (zú) means 'enough' or 'sufficient'; together, they form a compound adjective emphasizing completeness and adequacy. It carries a formal, positive tone and is frequently used in written Chinese and formal speech.

This word often appears in contexts like planning, health, education, or logistics — for example, when describing adequate rest, sufficient raw materials, or enough preparation time before an event. It’s rarely used for abstract concepts like emotions or opinions; instead, it focuses on tangible or measurable quantities. Unlike colloquial alternatives like 够 (gòu), 充足 sounds more objective and authoritative, making it common in reports, official announcements, and academic writing.