regular

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