What does fastest mean?
Fastest means superlative form of fast (adjective): most fast.
Pronunciation varies by accent · adjective
superlative form of fast (adjective): most fast.
He set a new fastest time for running a mile.
Scientists say it is one of the world’s fastest-melting glaciers.
But thou, when thou fastest, anoint thine head, and wash thy face.
Choose a synonym only when it preserves the intended meaning, tone, and grammar of the full sentence.
Fastest means superlative form of fast (adjective): most fast.
Common synonyms include quickest.
The opposite depends on the specific sense.
He set a new fastest time for running a mile.
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