τερπνός
From LSJ
νόσημα γὰρ αἴσχιστον εἶναί φημι συνθέτους λόγους → for I consider false words to be the foulest sickness
English (LSJ)
ή, όν, (τέρπω)
A delightful, pleasant (Hom. only as v.l., Od.8.45), Thgn.1019 (= Mimn.5.3), Pi.O.6.57, al., A.Ag.143 (lyr.), etc.; τερπνὰ παθών Tyrt.12.38; also in Prose, Democr.211; πρὸς τὸ τερπνόν Th.2.53, cf. Pl.Cra.419d; τὰ τ. delights, pleasures, Isoc.1.21, X.Mem.2.1.23; τὸ τ. enjoyment, Metrod.Fr.47. 2 rarely of persons, αὑτῷ δὲ τερπνός to his own content, S.Aj.967; γέρων τ. Anacreont.37.1. II regul. Comp. τερπνότερος Phld.Oec.p.9 J.: Sup. -ότατος Thgn.256; irreg. τέρπνιστος Call.Fr.256; Adv. -ιστα (or -ίστα[τα]) Id. in PSI11.1218c6. III Adv. τερπνῶς Thgn. 914, S.Fr.583.5.