HSK 7-9
猛
měng形
ferocious; fierce; violent; brave
他猛地推开门冲进屋里。
Tā měngde tuīkāi ménchōngjìn wūlǐ.
He suddenly pushed the door open and rushed inside.
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Appears across levels (7-9) in the HSK 3.0 word list.