The river current moves more swiftly in the narrow channel.
The army moved swiftly to prevent looting after the earthquake.
I swiftly ran away.
Jenny moved most swiftly in the ballet test.
For example: He swiftly kicked the ball scoring a goal for his team.
ali runs swiftly
The girl was very swift in a race.A swift current was flowing down the flooded stream.I saw a swiftly ghost passing by
A freight train swiftly flew along the tracks.
The swift brown fox jumped over the lazy dog.
He ascended the rungs of the political ladder more swiftly than expected.
I would recommend that you use "most swiftly" since swiftliest could sound a bit awkward.
We may use Furiously as swiftly or intensively e.g. You dont should be peevish do everything furiously!
more swiftly, most swiftly
In the given sentence, the word 'large' is an adjectivedescribing the noun 'fish'.