Bailly
εὐθενέω-ῶ, v. εὐθηνέω.
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LSJ
thrive, flourish, of animals and plants, μῆλα… εὐθενοῦντα A. Eu. 944 (lyr.); καρπόν τε γαίας καὶ βοτῶν… ἀστοῖσιν εὐθενοῦντα ib. 908, cf. Thphr. CP 2.4.5, 5.11.3; μή τιν’ οἶκον εὐθενεῖν A. Eu. 895 (Scalig. for εὐσθ-)· εὐθενούντων τῶν πραγμάτων D. 18.286; also of men, τοὺς στρατιώτας… εὐθενεῖν Id. 8.20; ἡΛοκρὶς εὐθηνεῖ (leg. εὐθενεῖ) τῷ ζεφύρῳ Thphr. Vent. 44, cf. Plu. Publ. 11, Ael. NA 5.13. Pass. in same sense, [οἱ Λακεδαιμόνιοι] εὐθενήθησαν Hdt. 1.66 codd. (elswh. εὐθηνέω in codd. Hdt.); τὴν πόλιν εὐθενεῖσθαι D. 19.231 (s.v.l.). (εὐθηνέω is freq.v.l. ; εὐθενέω (Att. acc. to Zonar.) is required by metre in A. Eu. 895 (cj.), Cratin. 327, and is found in best codd. of D., Arist. (v.l. in PA 680a28, HA 601b9, Mete. 352a6, al., εὐσθεν- v.l. in EN 1100a6, GA 775a29, etc.), cod. Urb. of Thphr. CP 5.11.3, al., Aristid. Or. 46 (3).42, v.l. in Ael. VH 13.1, etc.)
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)