Occlusive
When you push people out of the way so you can get ahead, usually by being a total jerk and not caring if they get trampled in the process.
He blocked everyone in line just so he could go first. Occlusive is his middle name.
My boss got promoted by kicking me out of the project. Occlusive at its finest.
She got the job because she made sure everyone else failed. That’s occlusive.