vastly meaning

Definition of vastly

1. to an exceedingly great extent or degree
   • He had vastly overestimated his resources
   • was immensely more important to the project as a scientist than as an administrator

   Synonyms: immensely

   Related forms: vast

How to pronounce vastly

vastly is pronounced /ˈvɑːstli/ in British English and /ˈvæstli/ in American English. It has 2 syllables, with the stress on the first syllable.

Words that rhyme with vastly

• lastly
• ghastly