Fulsome
Definition: abundant, generous
Something that’s “fulsome” has a lot of some characteristic. It can also mean “overdone,” and is commonly used to mean “too much praise.”
Why I Looked It Up
From Team of Rivals:
In a fulsome letter, he expressed fervent gratitude to his “friend and benefactor,” realizing that Fed’s “public reputation” as well as his “private wealth & include” would greatly enhance his own standing.
Postscript
Added on
In Stalin's Library: A Dictator and His Books:
…Stalin was fulsome in his praise of Trotsky’s role in organising the insurrection.