As adjectives the difference between lumpiest and bumpiest
is that lumpiest is (lumpy) while bumpiest is (bumpy).
lumpiest
English
Adjective
(head)
(lumpy)
lumpy
English
Adjective
(
er)
Full of lumps, not smooth.
- I don't know which was worse, the lumpy''' soup or the '''lumpy bed.
Anagrams
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bumpiest
English
Adjective
(head)
(bumpy)
bumpy
English
Adjective
(er)
rough; jumpy; causing or characterized by jolts and irregular movements
covered with or full of bumps