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rüstig

Φιλοκαλοῦμέν τε γὰρ μετ' εὐτελείας καὶ φιλοσοφοῦμεν ἄνευ μαλακίας -> Our love of what is beautiful does not lead to extravagance; our love of the things of the mind does not makes us soft.
Τhucydides, 2.40.1

German > Latin

rüstig, robustus (kernfest, handfest). – strenuus (flink, frisch zur Hand bei der Arbeit). – impiger (unverdrossen). – r. Kraft, vis vigorque.Adv.strenue; impigre.