perattente
From LSJ
σοὶ μὲν παιδιὰν τοῦτ' εἶναι, ἐμοὶ δὲ θάνατον → This is sport to you but death to me (Aristotle, Eudemian Ethics 1243a20)
Latin > English (Lewis & Short)
pĕrattentē: adv., v. perattentus.
Latin > French (Gaffiot 2016)
pĕrattentē,¹⁶ avec beaucoup d’attention : Cic. Cæl. 25.