καὶ δὴ καί

From LSJ

ἑὰν δὲ προσποιούμενος ᾗ τὰ μαθήματά πως ἀπείρως προβάλλων, οὐκ ἔστιν αἰτίας ἔξω → But should one profess knowledge as he puts forward something in an inexperienced way, he is not without blame (Pappus 3.1.30.31f.)

Source
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Full diacritics: καὶ δὴ καί Medium diacritics: καὶ δὴ καί Low diacritics: και δη και Capitals: ΚΑΙ ΔΗ ΚΑΙ
Transliteration A: kaì dḕ kaí Transliteration B: kai dē kai Transliteration C: kai di kai Beta Code: kai\ dh\ kai/

English (LSJ)

v. δή IV. 4.