Vastly vs. Fastly

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Difference Between Vastly and Fastly
Vastlyadverb
Greatly, in a vast manner.
Fastlyadverb
securely; fast
We tied the rope fastly this time; we didn't want it to get away again.Vastlyadverb
to an exceedingly great extent or degree;
He had vastly overestimated his resourceswas immensely more important to the project as a scientist than as an administratorFastlyadverb
(nonstandard) quickly
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