Uneven is a related term of crabbed.
As adjectives the difference between uneven and crabbed
is that uneven
is not even while crabbed
is bad-tempered or cantankerous.
As a verb crabbed is
Not level or smooth
Varying in quality
Bad-tempered or cantankerous.
* 1800(?) Robert Southey, Winter
- A wrinkled crabbed man they picture thee,
- Old Winter, with a rugged beard as grey
(of handwriting) Crowded together and difficult to read.
- As the long moss upon the apple-tree;