擅 (w)

(shàn) without authority; to usurp; to arrogate to oneself; to monopolize; expert in; to be good at

擅场 (w)

(shànchǎng) to excel in some field; expert at sth

擅断 (w)

(shànduàn) arbitrary

擅权 (w)

(shànquán) to arrogate power

擅美 (w)

(shànměi) to enjoy fame without sharing it; to take the credit

擅自 (w)

(shànzì) without permission; of one's own initiative

擅长 (w)

(shàncháng) to be good at; to be expert in

擅闯 (w)

(shànchuǎng) to enter without permission; to trespass

擅离职守 (w)

(shànlízhíshǒu) AWOL (Absent Without Leave, military term)