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puistje

Γελᾷ δ' ὁ μωρός, κἄν τι μὴ γέλοιον ᾖ -> The fool laughs even when there's nothing to laugh at
Menander

Dutch > Greek

puistje = αἰθόλιξ

(Translation based on the reversal of Mijnwoordenboek's Ancient Greek to Dutch dictionary)