Lexical Definition

‎δημηγορέω‎ dēmēgoréō (day-may-gor-eh'-o) to give a speech G:V
from a compound of ‎δῆμος‎ and ‎ἀγορά‎

make an oration.

Usage: 3 forms in 3 verses
Form Translated As     In Verse(s)
ἐδημηγόρει was making an address Acts.12.21
δημηγορών delivering a public address LXX.Prov.30.31
δημηγορήσαι delivering a public address LXX.Neh.8.4

Abbott-Smith

δημηγορέω, -ῶ (< δῆμος, ἀγορεύω, to speak in the assembly), [in LXX: Pr 24:66 (30:31), IV Mac 5:15 * ;]
to deliver an oration: Ac 12:21.†

Abbott-Smith References

Book Refs
Proverbs 24:66 · 30:31
Acts 12:21

Liddell-Scott-Jones

δημηγορέω-έω,

practise speaking in the assembly, [Refs 5th c.BC+]:—passive, τὰ δεδημηγορέωημένα public speeches, [Refs]

__II especially make popular speeches, use clap-trap, ταῦτα δημηγορέωεῖς [δημηγορέωιῶν ὧν δ. 4th c.BC: Demosthenes Orator 21.202 ">Refs 5th c.BC+]; δ. πρὸς χάριν, πρὸς ἡδονήν, [Refs 2nd c.AD+]