earliest readiest timeliest most punctual most prompt most on time fastest quickest swiftest fleetest nimblest snappiest speediest briskest zippiest hastiest sprightliest dizziest nippiest most rapid most blistering most express most accelerated most expeditious most expeditive most velocious strictest finickiest fussiest pickiest most meticulous most cautious most careful most conscientious most demanding most detailed most methodical most exacting most diligent most fastidious most painstaking most persnickety most scrupulous most thorough most pedantic most perfectionist