WordWeb Online

1. Not openly expressed
   "a sneaking suspicion";
   - unavowed

1. To go stealthily or furtively
   "..stead of sneaking around spying on the neighbour's house";
   - mouse, creep, pussyfoot
    
2. Put, bring, or take in a secretive or furtive manner
   "sneak a look"; "sneak a cigarette"
    
3. Make off with belongings of others
   - pilfer, cabbage, purloin, pinch [Brit], abstract, snarf [N. Amer], swipe, hook, filch [informal], nobble [Brit], lift, snatch, whip [Brit], nick [Brit, informal]
    
4. Pass on stealthily
   "He sneaked me the key when nobody was looking";
   - slip

See also: concealed, sneak away

Type of: act, give, hand, move, pass, pass on, reach, steal, turn over, walk

Encyclopedia: Sneak