Search Result for "momentously": 
Wordnet 3.0

ADVERB (1)

1. in a momentous way;


The Collaborative International Dictionary of English v.0.48:

Momentous \Mo*men"tous\, a. [Cf. L. momentosus rapid, momentary.] Of moment or consequence; very important; weighty; as, a momentous decision; momentous affairs. -- Mo*men"tous*ly, adv. -- Mo*men"tous*ness, n. [1913 Webster]
WordNet (r) 3.0 (2006):

momentously adv 1: in a momentous way