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