What is the meaning of sneaking?

verb

• To go stealthily or furtively.
  • usage: ".. Stead of sneaking around spying on the neighbor's house"
  • synonyms: sneak, mouse, creep, pussyfoot
• Put, bring, or take in a secretive or furtive manner.
  • usage: "sneak a look"; "sneak a cigarette"
  • synonyms: sneak
• Make off with belongings of others.
  • synonyms: pilfer, cabbage, purloin, pinch, abstract, snarf, swipe, hook, sneak, filch, nobble, lift
• Pass on stealthily.
  • usage: "He slipped me the key when nobody was looking"
  • synonyms: slip, sneak

adjective

• Not openly expressed.
  • usage: "a sneaking suspicion"
  • synonyms: unavowed