παιδαριώδης
From LSJ
αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
English (LSJ)
ες,
A childish, puerile, Pl.Phlb.14d, Arist. Pol.1270b28, Metaph.995a5, Nicoch.21, Plb.12.4B.1 (Sup.); τὸ -έστατον the most puerile style, Longin.4.1. Adv. -δῶς Plb.27.2.10, Phld.Mus.p.91 K., Gal.14.224.