Asseverative ἦ (prepositive) in truth, in sooth, verily, upon my honour, etc.; as ἦ καλῶς λέγεις G. 447c.
ἦ is usually associated with other particles.
ἦ γάρ when used alone in dialogue = is it not so? Cp. n'est ce pas, nicht wahr? Elsewhere it often has the force of am I to understand that asked with surprise. Thus, ἦ γὰρ νοεῖς θάπτειν σφ᾽, ἀπόρρητον πόλει; what, dost thou in truth intend to bury him, when it is forbidden to the citizens? Ant. 44.
ἦ δή expresses lively surprise.
ἦ καί is found in animated questions. Here καί goes closely with ἦ.
ἦ μήν (Hom. ἦ μέν, ἦ μᾱ́ν) prefaces strong asseverations, threats, and oaths, in direct and indirect discourse. Thus, ἦ μὴν ἐγὼ ἔπαθόν τι τοιοῦτον
in truth this was my experience A. 22a, ὄμνῡμι θεοὺς . . . ἦ μὴν μήτε με Ξενοφῶντα κελεῦσαι ἀφελέσθαι τὸν ἄνδρα μήτε ἄλλον ῡ̔μῶν μηδένα
I swear by the gods upon my honour neither did Xenophon nor any one else among you bid me rescue the man A. 6.6.17.
ἦ που indeed, methinks, in poetry I ween. Here the shade of doubt indicated by πού is not real.
Interrogative ἦ (2650) is probably the same as asseverative ἦ.