WordReference Random House Unabridged Dictionary of American English © 2026
lump•ish
(lum′pish),USA pronunciation adj.
lump′ish•ly, adv.
lump′ish•ness, n.
- resembling a lump.
- having a heavy appearance;
moving clumsily. - having a sluggish mind;
unresponsive;
dull;
stupid.
- late Middle English lumpisch. See lump1, -ish1 1400–50
lump′ish•ness, n.