i Register
In some senses, greatly is marked as archaic. Watch for register when choosing this word.
adv
To a great extent or degree.
Expenses greatly exceeded revenues this year, much to nobody's surprise.
He was more greatly beloved than anyone in living memory.
Nobly; magnanimously.
His Suff’rings ſhine, and ſpread a Glory round him; Greatly unfortunate, he fights the Cauſe Of Honour, Virtue, Liberty, and Rome.
But all this our fisher, who was neither a poet, nor a dependent, did not know, so he concluded, that all who were truly great, were truly greatly minded, and noble in soul, as they were exalted by birth, and rich in splendour.