EARLY : LATE :: MUCH :

1. more
2. enough
3. little
4. Working

Early and “late” are temporal opposites. “Much” and “little” contrast in quantity. “More” is a comparative of “much,” not an antonym. “Enough” suggests sufficiency, not opposition. “Little” directly negates “much,” fitting the antonymic relationship. So, EARLY : LATE :: MUCH : LITTLE