genius

polyhistor, polymath, Renaissance man

blue, bluestocking, highbrow, intellectual

sage, savant

egghead, geek, longhair, nerd

master, virtuoso

ace, crackerjack (also crackajack), natural

affinity, bias, disposition, habitude, impulse, inclination, leaning, partiality, penchant, predilection, predisposition, proclivity, propensity, tendency, turn

ear, eye, mind, nose

feel, hang, instinct, touch, way

capability, competence, facility, proficiency, skill

capacity, potential, power

forte, specialism, speciality, specialty

favor, one-sidedness, partisanship, prejudice

endowment, faculty, flair, genius, gift, knack, talent

addiction, appetite, fancy, fondness, like, liking, preference, taste

forte, speciality, specialty

convention, custom, habit, pattern, practice (also practise), routine, trick, way, wont

eccentricity, idiosyncrasy, kink, oddity, peculiarity, quirk, singularity

distinctiveness, distinctness, individuality, singularity, uniqueness

attribute, characteristic, earmark, essentiality, feature, flavor, hallmark, mark, point, property, savor (also savour), stamp, trait

disposition, grain, sort, temper, temperament

composition, makeup

essence, essentiality, interior, interiority, soul, spirit

metal, stuff, substance

habit, way

actualization, concretization, exemplification, personalization, realization, substantiation

essence, quintessence, soul

archetype, exemplar, model, paradigm, pattern

reincarnation