‘既定’ is an adjective meaning ‘already decided,’ ‘pre-established,’ or ‘set in advance.’ It combines two characters: 既 (jì), which conveys the sense of ‘already’ or ‘by now,’ and 定 (dìng), meaning ‘to decide,’ ‘to fix,’ or ‘to settle.’ Together, they emphasize that something has been firmly determined prior to the current moment—often implying formality, authority, or inevitability. The word carries a slightly formal or written tone and is common in official announcements, policy documents, schedules, and planning contexts.

It typically modifies nouns like 方案 (plan), 目标 (goal), 日程 (schedule), or 政策 (policy), and often appears with words such as ‘方针’ (guideline) or ‘路线’ (line/path). Unlike colloquial alternatives like ‘早就定好的,’ 既定 sounds objective and impersonal, suggesting the decision was made through due process—not just casually agreed upon. It’s rarely used in casual speech or emotional expressions.