This is a Poet. and ionic Verb, while ἐπαινέω is used in attic Prose
I.properly, to tell or speak of (cf. αἶνος), Aesch.
II.commonly, to speak in praise of, praise, Lat. laudo, c. acc., Hom., Hdt.
2.to allow, recommend, Od.: c. inf. to recommend to do a thing, Aesch.; also c. part., αἰνεῖν ἰόντα to commend one's going, id=Aesch.
3.like ἀγαπάω, to be content, acquiesce, Eur.:—c. acc. rei, to be content with, acquiesce in, γάμον Pind., etc.; θῆσσαν τράπεζαν Eur.
4.to decline courteously, Hes.