Spread irregularly (6)
I believe the answer is:
sprawl
'spread irregularly' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for sprawl that I've seen before include "10 with one's limbs extended" , "Fall with limbs spread out" , "Sit or lie with limbs spread out" , "Sit in an ungainly manner" , "Sit with one's limbs spread out" .)