Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

136. Frequency — N. frequency, oftness†, oftenness†, commonness;

repetition &c 104; normality &c 80; example (conformity) 82; routine, custom (habit) 613. regularity, uniformity, constancy, clock-work precision; punctuality &c (exactness) 494; even tenor; system; routine &c (custom) 613; formula; rule &c (form regulation) 697; keynote, standard, model; precedent &c (prototype) 22; conformity &c 82. V. recur &c 104; do nothing but; keep, keep on. Adj. frequent, many times, not rare, thickcoming†, incessant, perpetual, continual, steady, constant, thick; uniform; repeated &c 104; customary &c 613 (habit) 613; regular (normal) 80; according to rule &c (conformable) 82. common, everyday, usual, ordinary, familiar. old-hat, boring, well-known, trivial. Adv. often, oft; ofttimes†, oftentimes; frequently; repeatedly &c 104; unseldom†, not unfrequently†; in quick succession, in rapid succession; many a time and oft; daily, hourly &c; every day, every hour, every moment &c, perpetually, continually, constantly, incessantly, without ceasing, at all times, daily and hourly, night and day, day and night, day after day, morning noon and night, ever anon, invariably (habit) 613. most often; commonly &c (habitually) 613. sometimes, occasionally, at times, now and then, from time to time, there being times when, toties quoties [Lat.], often enough, when the mood strikes, again and again.