LSJ Gloss:συζητητήςa joint inquirer: a disputerDodson:συζητητήςa disputera disputer, as the Greek sophists.
TBESG:συζητητήςdebaterG:N-M συν-ζητητής (Rec. συζ-), -οῦ, ἁ (< συνζητέω), a disputer, disputant: 1Co.1:20.† (AS)
συζητέω suzēteō sood-zay-teh'-o From G4862 and G2212; to investigate jointly, that is, discuss, controvert, cavilKJV Usage: dispute (with), enquire, question (with), reason (together).
συζήτησις suzētēsis sood-zay'-tay-sis From G4802; mutual questioning, that is, discussionKJV Usage: disputation (-ting), reasoning.