marker, attribution, character, affection, criterion, singularity, fingerprint, endowment, distinction, indication, alter ego, point, trace, specific, fault, diagnostic, be, affectation, propensity, flaw, sign, predisposition, touch, persona, differentia, incarnation, note, attribute, savor, foible
habit (part of speech: noun)
custom, daily grind, second nature, habit, fixed ways, leaning, addiction, manner, mannerism, tendency, wont, oddity, familiarity, temperament, regularity, instinct, trick, disposition, routine, study at quality, tradition, treadmill, way of life, rut, acclimation, lifestyle, conventionality
specialty (part of speech: noun)
flavor, specialization, definiteness, idiosyncrasy, hallmark, quality, figure, difference, property, cachet, particularity, individuality, mark, characteristic, way, specialty, peculiarity, stamp, keynote, feature, discriminant, quirk, forte
- It was a family trait, and evidence of the purity of her blood. - "Birds and Poets", John Burroughs.
- Thiennette felt not the loss of the inheritance, but of her that should have left it; and this more deeply for one little trait, which she had already told his mother, as she now told him. - "The Campaner Thal and Other Writings", Jean Paul Friedrich Richter.
- The reform measure is more hopeful when directed, not at a rooted trait, but at a surface phase or custom. - "Life's Minor Collisions", Frances Warner Gertrude Warner.