Lexical Definition

‎μήπω‎ mḗpō (may'-po) not yet ^G:ADV-N
from ‎μή‎ and ‎-πω‎

not yet.

Abbott-Smith

* μήπω (μή πω, LTr., in Ro 9:11), adv.,
not yet: c. ptcp., Ro 9:11; c. acc. et inf., He 9:8.†

Abbott-Smith References

Liddell-Scott-Jones

combination of: οὐ (μή+-πω)

μήπω

or μή πω,

__I as adverb not yet, [Refs 8th c.BC+]; ἀλλὰ μήπω τοῦτο (i.e. σκοπεῖτε) [Refs 8th c.BC+]; μήπω γε nay, not yet, [μήπω μανείη 5th c.BC: Euripides Tragicus “Hecuba” 1278; μήπω νοῦ τοσόνδ᾽ εἴην κενή 5th c.BC: Sophocles Tragicus “Electra” 403. ">Refs 8th c.BC+]
__II as conjunction, lest yet, κελόμην ἐπιβαινέμεν.., μή πώ τις.. λάθηται [Refs 8th c.BC+]