regular

accepted accustomed accurate amicable average blank businesslike certain changeless characteristic commonest common conformable constant continual continuous conventional correct customary cyclical daily dull dull duller duller equable even faithfully formal frequenter general good gradational gradual habitual habitué horizontal innate instinctual instinctive intimate invariable invariant isochronous isochronal judicial just legitimate level mainstream measured methodical/methodic methodical methodic monochromatic more correct more certain more formal more methodic more methodic more constant more even more accurate more methodical more methodical more normal more uniform more natural more readable more solid more orderly more prevalent most certain most correct most methodic most methodic most methodical most methodical most punctual natural neat neatest neater normal old school old-school orderly pandemic paradigmatic periodic plane planar prevailing prevalent prototypic prototypal prototypical punctual readable recurrent round-the-clock routine run-of-the-mill set sequential shapely sincere sincerest smooth smoothest smoother sociable solid standing stated steady-going steady steady step-by-step stocker stock stuporous symmetric symmetrical systematical systematic through time-honored traditional truer trig truest true typic typical unbroken uniform universal unremitting unwavering usual veridical virtuous wonted