τερπνόν

From LSJ

δωρεὰν ἐλάβετε, δωρεὰν δότε → you have taken freely; give freely

Source

Russian (Dvoretsky)

τερπνόν: τό наслаждение, удовольствие Thuc., Isocr., Plat.

Lexicon Thucydideum

delectatio, pleasure, delight, 1.120.4, 2.53.2.