lumpily

adverb2

1. •
   In a lumpy manner, with lumps.

   • An hour later, he had paid about $3.25, been talked through the workings of a small bank of stainless-steel machines, and was leaving with a bag of fluffy if lumpily folded clothes. — 2011
2. •
   Like a lump; awkwardly, heavily, ponderously.

   • He'd stuck his hands in his pockets as I came in, and he sat down lumpily in his chair. — 1897