clever in WordNet English dictionary

1. mentally quick and resourceful
   "an apt pupil"; "you are a clever man...you reason well and your wit is bold"-Bram Stoker
   apt  clever 
   
2. showing self-interest and shrewdness in dealing with others
   "a cagey lawyer"; "too clever to be sound"
   cagey  cagy  canny  clever 
   
3. showing inventiveness and skill
   "a clever gadget"; "the cunning maneuvers leading to his success"; "an ingenious solution to the problem"
   clever  cunning  ingenious