As adverbs the difference between vastly and broadly
is that vastly is greatly, in a vast manner while broadly is in a wide manner, liberally, in a loose sense.
vastly
English
Adverb
(
en adverb)
Greatly, in a vast manner.
*{{quote-book, year=1913, author=
, title=Lord Stranleigh Abroad
, chapter=1
citation
, passage=“I have visited my quarters, and find them very comfortable.
Synonyms
* exceedingly, extremely, highly, immensely, supremely, tremendously
broadly
English
Adverb
(
en adverb)
In a wide manner, liberally, in a loose sense.