The phrase "a massive rejection of" is correct and usable in written English.
It can be used to describe a significant or overwhelming refusal or disapproval of something, such as an idea, proposal, or policy.
Example: "The recent survey revealed a massive rejection of the proposed changes to the healthcare system."
Alternatives: "a strong dismissal of" or "a significant refusal of".
Tonight is a massive rejection of the European Union.
Galloway scored a dramatic win in Bradford West, securing a 10,000-plus majority in what he called a "massive rejection" of mainstream parties.
But Boeing released a statement Wednesday night saying that the ruling "amounts to a massive rejection" of the European case and maintained that Europe's low-interest loans to Airbus, known as launch aid, stand "as the single largest and most flagrant illegal subsidy in the aerospace industry".
If she were to become the voice and representative of the GOP and the modern conservatism movement, both would suffer a massive rejection.
Sarkozy described his party's high score as historic and a mark of France's "massive rejection" of the politics of his successor, Hollande.
May needed to go again to the EU "with a high heart, fortified by the massive rejection of the House of Commons", judged Johnson, speaking as always like a Taiwanese news animation of Winston Churchill.
Only after the massive rejection of Republicans in the 2006 congressional elections did the Bush White House fundamentally alter its war strategy in Iraq.
This amounts to a massive market rejection of S&P's concerns.
His company — with its massive growth, rejection of Google's proposed acquisition, troubles with the S.E.C., and I.P.O — provided one of the industry's great dramas of the year.
Obamacare represented a wholesale a rejection of these efforts.
He went to live in Basel, where he did a massive total of 27 productions, as part of his rejection of the polluted cultural heritage of Germany.
