regular

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