HSK 7–9 · adjective · adverb · Practice
不定
uncertain; indefinite; perhaps; maybe
他今天不定什么时候到，我们再等等。
Tā jīntiān búdìng shénme shíhou dào， wǒmen zài děng děng。
It's uncertain when he'll arrive today; let's wait a bit longer.
明天说不定会下雨。
Míngtiān shuōbúdìng huì xià yǔ.
It might rain tomorrow; who knows.
选哪个工作，他一直举棋不定。
Xuǎn nǎge gōngzuò， tā yìzhí jǔqíbúdìng。
He keeps hesitating about which job to choose.