The adjective 美味しい (meaning "delicious", JLPT N5) conjugates in the Past Negative Polite form as 美味しくなかったです (oishikunakatta desu). Adjective type: i-adjective.
Context Example
この寿司は美味しくなかったです。
Kono sushi wa oishikunakatta desu.
This sushi was not delicious.
What is the Past Negative Polite conjugation of 美味しい (oishii)?
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