Synonyms of the word 
LUMPY → CHUNKY - UNEVEN - UNSHAPELY
lumpy
- adj. Full of lumps, not smooth.
- adj. Characteristic of a water surface covered in many small waves as a result of wind, choppy.
chunky
- adj. Having chunks.
- adj. (euphemistic, of a person) Fat.
- n. Alternative form of chunkey (Native American game).
uneven
- adj. Not even.
- adj. Not level or smooth.
- adj. Not uniform.
- adj. Varying in quality.
unshapely
- adj. Not having a distinct shape.
If you are interested in words, visit the following sites :
- wiktionary.org/lumpy For complete definition of a word
- 1word.ws/lumpy to play with words, suffixs, prefixs, etc.