Dubious:
His level of chess is extraordinary,
It’s a bit dubious how he learned so fast by himself

Tertiary:
The bald eagle is a tertiary consumer

Homogeneous:
All k-pop artists look homogeneous

Kleptomaniac:
The inability to refrain from stealing
I caught my son stealing again, he a kleptomaniac. I. might need to send him to a school for troubled youth

Pyromaniac:
He isn’t allowed to touch the matches because he’s a pyromaniac