Comparative form of stumpy: more stumpy(adjective)
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Use "stumpier" in a sentence
"Participants imagined much stumpier hands than they possessed: They underestimated finger length by about 28% on average and overestimated the distance between knuckles by 67%."
"Saw Big Ben, shorter and stumpier than he remembered it."
"The moon, three-parts full to start with, waxed at each meeting, and their shadows grew nightly denser and stumpier."