LogeionPerseus analysis of ἄτερ:
ἄτερ (without, apart from): indeclform (prep)
LSJ entry
ἄτερ
ἄτερ [ᾰ],
Ep.,
Ion.,
Trag. Prep. with gen., II. aloof, apart from, ἄ. ἥμενον ἄλλων Il. 1.498;
νόσφιν ἄ. τε κακῶν Hes. Op. 91:—freq. in Trag., mostly after its case, A. Supp. 377,
etc.; but before it in Id. Pr. 456,
Supp. 703 (lyr.), Ch. 338 (lyr.), S. Ph. 703 (lyr.), El. 866:—also in late Prose, as LXX 2 Ma. 12.15,
D.H. 3.10,
Ev.Luc. 22.6,
Plu. Cat.Mi. 5,
Vett.Val. 136.9,
al.