In Japanese, the verb 落とす (meaning "to to drop / lose (item)", JLPT N4) conjugates in the Past Negative Casual form as 落とさなかった (otosanakatta). Verb group: Group 1.
Context Example
財布を落とさなかった。
Saifu o otosanakatta.
I did not drop my wallet.
What is the Past Negative Casual conjugation of 落とす (otosu)?
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