LSJ
of a Council, complete its term, Arist. Ath. 32.1. mostly in Med. (Dor. διαβωλεύω IG 5(2).343), deliberate, discuss thoroughly, And. 2.19, Th. 2.5, 7.50; δ. εἴτε… Pl. Plt. 304e, cf. Luc. Hist. Conscr. 31; decide, c. inf., Id. Pisc. 24.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
TBESG
to deliberate upon (MT)
Translators Brief lexicon of Extended Strongs for Greek based on Abbot-Smith, A Manual Greek Lexicon of the New Testament (1922) (=AS), with corrections and adapted by Tyndale Scholars