"stumpiest" in the adjective sense
1. chunky, dumpy, low-set, squat, squatty, stumpy
short and thick as e.g. having short legs and heavy musculature
"some people seem born to be square and chunky"
"a dumpy little dumpling of a woman"
"dachshunds are long lowset dogs with drooping ears"
"a little church with a squat tower"
"a squatty red smokestack"
"a stumpy ungainly figure"
Source: WordNet® (An amazing lexical database of English)
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