- 擅 [shàn]
- （超越范围，独断独行） arrogate to oneself; claim arbitrarily:
monopolize [usurp] power 擅权- （长; 善于） be good at; be expert in:
lack facility in polite or tactful speech; 不擅辞令
be not particularly good at casual conversation 不擅酬应
- （擅自） do sth. on one's own authority ; arbitrarily:
make a decision without authorization; make an unilateral [arbitrary] decision 擅作主张
He was busted (to corporal) for being absent without leave.
You cannot enter a military base without a permit.
She issued all these invitations without any reference to her superiors.
They entered the area without permission.