inaequalitas
From LSJ
ψυχῆς ἀγῶνα τὸν προκείμενον πέρι δώσων → to stand the appointed trial for his life, to stand the appointed struggle for life and death
Latin > English (Lewis & Short)
ĭnaequālĭtas: ātis, f. 2. in-aequalis,
I unevenness, unlikeness, inequality (not in Cic.).
I In gen.: togae et tunicae, Varr. L. L. 8, § 28 Müll.: inaequalitate dissident (supercilia), Quint. 11, 3, 79: coloris, id. 12, 9, 17; 11, 3, 43.—In <number opt="n">plur.</number>, Col. 3, 12, 3; Plin. 2, 70, 70, § 177.—
II In partic., grammatical irregularity, anomaly, Varr. L. L. 9, § 3 Müll.; Gell. 2, 25, 3.