identity

1 the state of being exactly alike although the covers of the two paperback editions of the novel are different, there's a complete identity in the texts Synonyms identicalness, sameness Related Words oneness, selfsameness; homogeneity, homogeneousness, homology; equality, equivalence; accordance, agreement, conformity, congruity, correspondence, likeness, resemblance, similarity Near Antonyms alteration, change, modification, variation; distinction, distinctiveness, distinctness, exoticness, individuality, separateness, separation, uniqueness, unusualness; deviance, divergence; variance; incompatibility, incongruence, incongruity, incongruousness; contrast Antonyms difference, disagreement, discrepancy, disparateness, disparity, dissimilarity, unlikeness

2 the set of qualities that make a person different from other people children begin to form their own identity by the age of two Synonyms character, individuality, individualism, personality, selfhood, self-identityRelated Words distinctiveness, idiosyncrasy, oneness, peculiarity, separateness, singleness, singularity, uniqueness; disposition, humor, nature, temper, temperament; independenceNear Antonyms conformity, conventionality