κἀγκύψας

From LSJ

Ψεύδει γὰρ ἡ ‘πίνοια τὴν γνώμην → A second thought proves one's first thought false

Sophocles, Antigone, 389

French (Bailly abrégé)

crase et contract. poét. p. καὶ ἀνακύψας, part. ao. de ἀνακύπτω.