ἀγνοητέον
From LSJ
English (LSJ)
with neg., οὐκ ἀ.
A one must not fail to remark, Dsc.Praef.7, Ph.1.11, al.
Greek (Liddell-Scott)
ἀγνοητέον: ῥημ. ἐπίθ., μετ ̓ ἀρνήσ. οὐκ ἀγνοητέον, δὲν πρέπει νὰ ἀγνοῇ τις, Διοσκορ. προοίμ. Ι. Φίλων.
Spanish (DGE)
hay que ignorar en litotes οὐχ ἀ. no se debe dejar de observar Ph.1.11, Dsc.praef.7, Asp.in EN 67.30, Didym.in Zach.4.30, Socr.Sch.HE 2.20.14.