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 [informal]
    
2. Put, bring, or take in a secretive or furtive manner
   "sneak a look"; "sneak a cigarette"
    
3. [informal] Take by theft
   - hook [informal], snitch [informal], thieve, cop [informal], knock off [informal], glom [N. Amer, informal], pilfer, cabbage [informal], purloin, pinch [Brit, informal], abstract, snarf [N. Amer, informal], swipe [informal], filch [informal], nobble [Brit, informal], lift, whip [Brit, informal], nick [Brit, informal], snatch [informal], blag [Brit, informal]
    
4. Pass on stealthily
   "He sneaked me the key when nobody was looking";
   - slip

See also: concealed

Type of: act, give, hand, move, pass, pass on, reach, rip [N. Amer, informal], rip off [informal], steal, turn over, walk

Encyclopedia: Sneaking