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Definitions by MonkeyDBesa

A Japanese word meaning “impossible,” “no way,” “unbelievable,” or “that can’t be”

Commonly used in anime (for example by Yuno in Black Clover) to react to something shocking, awkward, or hard to believe
A: “I’m stronger than you”
B: “Arienai”

You walk into class and accidentally see your teacher’s butt crack.
You: “Arienai”

A: “She’s not your friend. She’s been against you from the start”
B: “Arienai”
arienai by MonkeyDBesa March 26, 2026