"swiftest" in the adjective sense
1. fleet, swift
moving very fast
"fleet of foot"
"the fleet scurrying of squirrels"
"a swift current"
"swift flight of an arrow"
"a swift runner"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License