Added 10 October 2026 sneakingly adverb Categories: Describing WordsObscure Words adverb ! Definition from WordNet 3.1, Princeton University. More about sneakingly at Wordnik → Where our words come from → In a sneaky manner. I always felt sneakingly that I wanted to be a concert pianist Related Words: sneakilysneakishlystealthilyunderhandcovertlyslylysurreptitiouslystalkilyclandestinelyhidinglyskulkingly Back to today's word