Search Result for "one-upmanship": 
Wordnet 3.0

NOUN (1)

1. the practice of keeping one jump ahead of a friend or competitor; 



The Collaborative International Dictionary of English v.0.48:

one-upmanship \one-upmanship\ n.
   The attitude or practice of trying to keep one step ahead of
   a friend or competitor; vigorous competitiveness.
   [WordNet 1.5 +PJC]


WordNet (r) 3.0 (2006):

one-upmanship
    n 1: the practice of keeping one jump ahead of a friend or
         competitor