呆ボける

1. 1to grow senile ; to be childish with age Translated by Jiyomi
2. 2to be mentally slow ; to be befuddled Translated by Jiyomi
3. 3to play stupid ; to say something stupid (oft. on purpose; esp. as part of a comedic routine) Translated by Jiyomi

Other writings and readings

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JMdict entry 1288490 · frequency rank 50. Source and licence.