Grossly synonyms

Because if he is, he's either grossly mistaken, a damned liar or setting me up!

"Welcome back," was all he could say, grossly inappropriate for how strongly he'd felt her absence.

Yet in this matter Gibbon has been grossly misapprehended and misrepresented.

His court was grossly vicious.

The public school system, established in 1846, never was universal, because of special legislation for various counties; public education was retarded during the Civil War and the Reconstruction period (when immense sums appropriated for schools were grossly mismanaged), but conditions gradually improved after 1875, especially through the concentration of schools.