independence; autonomy; initiative; self-direction
Refers to the quality of acting based on one's own will and judgment, rather than being passive or following others. Often used in contexts of personal growth, education, and workplace behavior.
At work, it's important to act with initiative.
彼は主体性がなく、いつも人の意見に従ってしまう。
He lacks independence and always ends up following others' opinions.