Among the currently most popular synonyms for routine are: number, drill, groove, act, usual, regular, practice, everyday, day-to-day, customary, habitual, customs, commonplace, wont, schedule, conventional, normal, natural, familiar, usage, turn, established, perfunctory, modus operandi, habits, grind, performance, ways, system, praxis, standard, regime, piece, program, method, typical, pattern, workaday, line, mundane, formula, spiel, wonted, patter, unexceptional, plan, order, ordinary, accustomed, common, regimen, procedure.