regular

accepted accustomed accurate amicable average blank businesslike certain changeless characteristic common commonest 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 methodic methodical monochromatic more constant more correct more even more accurate more certain more formal more methodical more methodical more methodic more methodic more normal more readable more solid more prevalent more orderly more natural more uniform most correct most certain most methodic most methodic most methodical most methodical most punctual natural neat neatest neater normal old school old-school orderly pandemic paradigmatic periodic planar plane prevailing prevalent prototypical prototypic prototypal punctual recurrent readable round-the-clock routine run-of-the-mill sequential set shapely sincere sincerest smoother smoothest smooth sociable solid standing stated step-by-step steady-going steady steady stock stocker stuporous symmetric symmetrical systematical systematic through time-honored traditional trig truest truer true typical typic unbroken uniform universal unremitting unwavering usual veridical virtuous wonted