Uneven
Rough, Rugged
noun, な adjective, の adjective
A surface covered in convex and concave parts is going to be really uneven and rough.
おうとつ
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
凹凸のはっきりした顔立ちですね。
It has distinctly uneven features, doesn’t it?