Sneakiest Synonyms and Antonyms

Marked by treachery or deceit
(Adjective)
Synonyms:
  1. shiftiest
Marked by quiet and caution and secrecy; taking pains to avoid being observed
(Adjective)
Antonyms:
  1. frankest
So slow, deliberate, and secret as to escape observation
(Adjective)
Synonyms:
  1. stealthiest