A natural inclination:
— He has a proclivity for exaggeration.

synonyms: leaning, propensity.

Roget 176: tendency; aptness, aptitude; proneness, proclivity, bent, turn, tone, bias, set, leaning to, predisposition, inclination, propensity, susceptibility; conatus [Lat.], nisus [Lat.]; liability etc. 177; quality, nature, temperament; idiocrasy^†, idiosyncrasy; cast, vein, grain; humor, mood; drift etc. (direction) 278; conduciveness, conducement^†; applicability etc. (utility) 644; subservience etc. (instrumentality) 631.    ... show more

Roget 820: affections, affect; character, qualities, disposition, nature, spirit, tone; temper, temperament; diathesis^†, idiosyncrasy; cast of mind, cast of soul, habit of mind, habit of soul, frame of mind, frame of soul; predilection, turn, natural turn of mind; bent, bias, predisposition, proneness, proclivity, propensity, propenseness^†, propension^†, propendency^†; vein, humor, mood, grain, mettle; sympathy etc. (love) 897.    soul, heart, breast, bosom, inner man; heart's core, heart's strings, heart's blood; heart of hearts, bottom of one's heart, penetralia mentis [Lat.]; secret and inmost recesses of the heart, cockles of one's heart; inmost heart, inmost soul; backbone.    passion, pervading spirit; ruling passion, master passion; furore^†; fullness of the heart, heyday of the blood, flesh and blood, flow of soul.    energy, fervor, fire, force.    ... show more

Dutch: neiging, aanleg