lumpish

Having an ill-defined or rough form or shape like a lump; lumplike.

Awkward and ungainly in appearance or movement; clumsy, inelegant.

Dull and slow in acting, thinking, etc.; without energy; cloddish, lethargic, slow-witted, sluggish.

Of sound: dull, heavy.

Full of lumps; lumpy.

Of a thing: having a shape and/or weight which makes it inconvenient to move; cumbersome, unwieldy.

Miserable, sad.