HSK 7-9
大意
dàyi形
careless; negligent; inattentive
他因为一时大意丢了钥匙。
Tā yīn wèi yì shí dà yi diū le yào shi.
He lost the key because of a moment of carelessness.
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Appears across levels (7-9) in the HSK 3.0 word list.