The Collaborative International Dictionary
Inestimably
Inestimably \In*es"ti*ma*bly\, adv. In a manner, or to a degree, above estimation; as, things inestimably excellent.
Wiktionary
inestimably
adv. In an inestimable manner.
Usage examples of "inestimably".
The inestimably priggish and tiresome Henry David Thoreau thought nature was splendid, splendid indeed, so long as he could stroll to town for cakes and barley wine, but when he experienced real wilderness, on a visit to Katahdin in 1846, he was unnerved to the core.