ἀτενίζω

A. look intently, gaze earnestly, τοῖς ὄμμασιν stare, Hp. Epid. 7.10; εἴς τι Arist. Mete. 343b12; πρός τι Id. Pr. 959a24; of the eyes, ἀτενίζοντες αὐτῷ Ev.Luc. 4.20, cf. Act.Ap. 23.1, Placit. 1.7; εἴς τι Plb. 6.11.12, J. BJ 5.12.3, S.E. P. 1.75, etc.; εἴς τινα Act.Ap. 6.15; εἰς τὸν θεόν Them. Or. 4.51b; πρὸς τὸ ἐκείνου πρόσωπον Luc. Merc.Cond. 11: abs., also of the eyes, Arist. Pr. 957b18:—Pass., to be gazed upon, APl. 4.204 (Praxit.).
II. metaph. of the mind, ἀ. τὴν διάνοιαν πρός τι Arist. Ph. 192a15; εἰς τὴν προαίρεσιν ἀτενίζοντα πράττειν Phld. Ir. p.96 W.; to be obstinate, Lync. ap. Ath. 7.313f.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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