Swiftest (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">swiftest</span>' is the definition.<br/ ><span class="explanation-format__explanation">('fast' can be similar in meaning to 'swift')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fastest that I've seen before include "Speediest" , "Most rapid" , "Quickest" , "Finishing first" .)
(Other definitions for speediest that I've seen before include "Fastest" , "Most rapid" .)