Vastly

Pronunciation

Origin

vast + -ly

Full definition of vastly

Adverb

1. Greatly, in a vast manner.
• 1913, w, Lord Stranleigh Abroad Chapter 1, “I have visited my quarters, and find them very comfortable....Steerage is like everything else maritime...vastly improved since Robert Louis Stevenson took his trip third class to New York.”

Synonyms

• exceedingly, extremely, highly, immensely, supremely, tremendously