noun which may take the genitive case particle 'no', na-adjective, noun
unsettled; uncertain; indefinite; variable
Describes something that is not fixed, not decided, or subject to change. Used for plans, schedules, statuses, and abstract conditions. Often appears in formal or written contexts.
会議の日程はまだ不定です。
The meeting schedule is still undecided.
彼の将来は不定のままだっ
His future remained uncertain.
noun which may take the genitive case particle 'no', noun
Mathematics term for a value or form that is not uniquely determined, such as an indeterminate equation or an indeterminate form in calculus.
この方程式は不定解を持つ。
This equation has an indeterminate solution.
Compound of 不 (fu, 'not') and 定 (tei, 'fixed, decided'). The kanji combination directly yields the meaning 'not fixed' or 'unsettled'.