Use 'sweep aside' to express rapid rejection without much thought or consideration. The editor swept aside the new writer's ideas.
Pro Tip 2/3
Potential Negativity
This phrase can sound dismissive and negative if used in personal contexts, as it implies lack of care. He swept aside her concerns as if they didn't matter.
Pro Tip 3/3
Power Dynamics
Can indicate someone in power ignoring subordinates or rules, context shows if it's seen as positive or negative. The CEO swept aside the board's recommendations.