na-adjective
independent; autonomous; voluntary; self-initiated
Describes actions, decisions, or attitudes that come from one's own will, without external pressure. Often used for proactive, self-directed behavior in personal, organizational, or political contexts.
彼は自主的に残業を申し出た。
He voluntarily offered to work overtime.
Please act on your own independent judgment.
主体的 focuses on taking initiative as the main agent, often in a proactive role; 自主的 highlights autonomy and freedom from external influence.
Compound of 自主 (independence, autonomy) + 的 (-like, -ive). The base 自主 is a Sino-Japanese word from 自 (self) and 主 (master, main).