Sust. FEM. Equivalent condition: of equal value. The word derives from Latin adjectives "aequus ( pronounced ecuus ) ': plain, smooth, even, and 'valens, valentis': strong, robust, healthy, valuable. Synonyms: analogy, concordance, equation, equity, homogeneity, identity, equality, parity. Antonyms: inequality, difference, disagreement, discrepancy, gap, diversity, heterogeneity, inequality, inequity.