HSK 3
一定
yídìng形副
surely; certainly; definitely; fixed; settled; a certain ...; a given ...
明天考试我一定不会迟到。
Míng tiān kǎo shì wǒ yí dìng bú huì chí dào.
I definitely will not be late for tomorrow's exam.
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New in the HSK 3.0 word list at level 3.