SNEAKY Meaning of SNEAKY in English — sneakily , adv. — sneakiness , n./snee"kee/ , adj., sneakier, sneakiest . like or suggestive of a sneak; furtive; deceitful. [ 1825-35; SNEAK + -Y 1 ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012