Wordnet 3.0
ADJECTIVE (1)
1. 
 having or marked by unusual and impressive intelligence; 
- Example: "some men dislike brainy women"- Example: "a brilliant mind"- Example: "a brilliant solution to the problem"[syn: brainy, brilliant, smart as a whip]
WordNet (r) 3.0 (2006):
smart as a whip
    adj 1: having or marked by unusual and impressive intelligence;
           "some men dislike brainy women"; "a brilliant mind"; "a
           brilliant solution to the problem" [syn: brainy,
           brilliant, smart as a whip]