"Swiftest" Natural Recordings by Native Speakers
"Swiftest" is an adjective that means moving or happening quickly; rapid. It is the superlative form of the word "swift", indicating the highest degree of speed or rapidity.
To swerve is to suddenly turn or change direction, often sharply or unexpectedly, while driving a vehicle, but it can also be used in a more general sense to mean to change one's course or path.