lasting for a period of time that has no fixed end 无限期的；期限不定的 She will be away for the indefinite future. 她将离开一段时间，期限不定。 🔊🔊 The workers have been on indefinite strike since July. 工人从7月起就开始了无限期的罢工。
not clearly defined 模糊不清的；不明确的 an indefinite science 界定不明的科学
Word Originmid 16th cent.: from Latin indefinitus, from in- ‘not’ + definitus ‘defined, set within limits’ (past participle of definire, from de- (expressing completion) + finire ‘finish’).