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