διελεγκτέον
From LSJ
ἑτέρως ἠδύνατο βέλτιον ἢ ὡς νῦν ἔχει κατεσκευάσθαι → otherwise they could have been constructed better than they are now (Galen, On the use of parts of the body 4.143.1 Kühn)
English (LSJ)
A one must refute, Plu.2.450b.
Greek (Liddell-Scott)
διελεγκτέον: ῥημ. ἐπίθ. τοῦ διελέγχω, Πλούτ. Ἠθ. 450.
French (Bailly abrégé)
adj. verb. de διελέγχω.
Spanish (DGE)
hay que refutar οὐ τοῦτο νῦν δ. Plu.2.450b.