2
hebetudinous(adjective, dull, slow, heavy, sluggish)
2
lumping
2
simple
2
simple-minded
2
splay(awkward, inept, bulky, ungainly, hulking)
2
stagnant(adjective, dull, slow, heavy, sluggish)
2
substantial
2
thickheaded
2
thoughtless
2
tired(adjective, lethargic)
2
unhandy(awkward, inept, bulky, ungainly, hulking)
2
unintelligent
2
whacking(adjective, size)
1
Boeotian
1
amorphous
1
ample
1
asinine
1
beef-brained
1
beef-witted
1
big
11 years ago|10k views|share |citing 
APASmart Define. (2015). lumpish thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/lumpish/thesaurus/synonyms
ChicagoSmart Define. 2015. "lumpish thesaurus" https://smartdefine.org/lumpish/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, lumpish thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/lumpish/thesaurus/synonyms>.
MLASmart Define. "lumpish thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/lumpish/thesaurus/synonyms>