importantly importantly /ˌɪmˈpɔrtəntli/

adverb

1. () In an important way or to an important degree  ( significantly , importantly )
   in an important way or to an important degree
    More importantly, Weber held that the manifold meaning attached to the event by the social scientist could alter his definition of the concrete event itself
   more importantly, Weber held that the manifold meaning attached to the event by the social scientist could alter his definition of the concrete event itself
   
2. In an important way  ( importantly )
   in an important way
    For centuries jellies have figured importantly among English desserts, particularly upon festive occasion
   for centuries jellies have figured importantly among English desserts, particularly upon festive occasion