"enormous support" is a correct and usable phrase in written English. It is often used to refer to a large amount of help or encouragement from a person or group. For example: "The team was thankful for the enormous support they received from their fans throughout the championship game."
"We had enormous support.
He has enormous support.
Railway renationalisation draws enormous support.
There's enormous support across the party.
"I got enormous support, with thousands of e-mails.
But that film had enormous support from critics.
She's gotten enormous support from her Badger teammates".
There was enormous support around the world for the statue.
Prop 8 had sailed through with enormous support.
But I've had the most enormous support from them.
Given the enormous support Mr. Assad is receiving from his allies, that appears unlikely.
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Ha Thuy Vy
MA of Applied Linguistic, Maquarie University, Australia