habit
noun
1 sensible eating habits:
practice, custom, pattern, routine, style, convention, policy, wont, way, manner, mode, norm, tradition, matter of course, rule, usage;
tendency, propensity, inclination, bent, proclivity, proneness, disposition, predisposition.
2 his habit of pulling his ear as he made a point he thought important:
mannerism, quirk, characteristic gesture, characteristic, foible, trick;
trait, tendency, idiosyncrasy, peculiarity, singularity, oddity, eccentricity, way, feature, custom, practice.
3 the scientific habit of mind helps us to deal intelligently with problems:
disposition, temperament, character, nature, makeup, constitution, frame of mind, bent.
4 they financed their drug habit through prostitution:
addiction, dependence, dependency, craving, fixation, compulsion, obsession, weakness;
informal monkey;
US, informal jones.