STUMPIEST
STUMPY
chunky, dumpy, low-set, squat, squatty, stumpy
(adjective) 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® 3.1
Adjective
stumpiest
superlative form of stumpy: most stumpy
Source: Wiktionary
STUMPY
Stump"y, a.
1. Full of stumps; hard; strong.
2. Short and thick; stubby. [Colloq.] "A stumpy little man." J. C.
Harris.
Source: Webster’s Unabridged Dictionary 1913 Edition