"Immediate pushback" means receiving a quick and strong negative response or resistance to something.
Full definition
His words drew
immediate pushback from Republicans, conservative bloggers and even former Obama campaign adviser David Axelrod, who said the Vermont senator had been «a little tin - eared» (ClimateWire, Nov. 16).
Elia's comments signaled that uncertainty over the law's enforcement is likely to linger longer than originally thought — a prospect that
brought immediate pushback from the state's largest teachers union, among others.
When I talk about how much online dating profiles matter,
the immediate pushback is that people are all about photos and that.
In a recent Washington Post editorial about the new report card proposed for teacher education programs, writers intone: «That there was
immediate pushback to Mr. Duncan's announcement from the teachers unions and institutions of learning came as no surprise, given their record of resisting any and all accountability measures.»