Equality

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late Middle English: via Old French from Latin aequalitas, from aequalis (see equal).

wiktionary

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Borrowed from Middle French equalité (modern French égalité), from Latin aequālitās, aequālitātem. Doublet of equity.

Morphologically equal +‎ -ity

etymonline

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equality (n.)

late 14c., "evenness, smoothness, uniformity;" c. 1400 in reference to amount or number; from Old French equalité "equality, parity" (Modern French égalité, which form dates from 17c.), from Latin aequalitatem (nominative aequalitas) "equality, similarity, likeness" (also sometimes with reference to civil rights), from aequalis "uniform, identical, equal" (see equal (adj.)). Early 15c. as "state of being equal." Of privileges, rights, etc., in English from 1520s.