SPIVVIEST is a playable word

spivvy Scrabble® Dictionary

adjective
spivvier, spivviest
resembling a spiv in dress or conduct
84 Playable Words can be made from "SPIVVIEST"
   2-Letter Words (9 found)
   3-Letter Words (23 found)
   6-Letter Words (6 found)
   9-Letter Words (1 found)