Such people are called "high-handed", too sure of themselves, arrogant and over-proud.

这种人自以为了不起，傲慢、狂妄，惯施“高压手段”。 。

youdao

This is a vital check on the sort of arrogant and high-handed decision-making that has come to characterize recent Commerce Department decisions in this area.

CENTERFORSECURITYPOLICY: Center for Security Policy | Submitted Testimony by Frank J. Gaffney, Jr. on The Application Of National Security Export Controls To The East Bloc

If you're a Labour MP the ill-tempered debate was about a 'partisan', 'ill-conceived', 'ill-judged', 'ham-fisted', 'high-handed', 'arrogant' - and I could go on - attempt to impose new electoral arrangements on the Assembly with little regard to what its members, or the people of Wales want, arrangements, at that, that'll favour the Tories in future elections.

BBC: When David met Carwyn: the sequel