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Γελᾷ δ' ὁ μωρός, κἄν τι μὴ γέλοιον ᾖ → The fool laughs even when there's nothing to laugh at
imprō̆prĭē: (inpr-), adv., v. improprius.
imprŏprĭē, improprement : Plin. 10, 29 ; Gell. 17, 1 ; 6, 6, 2.