regular

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