Search Result for "toughen": 
Wordnet 3.0

VERB (1)

1. make tough or tougher;
- Example: "This experience will toughen her"



The Collaborative International Dictionary of English v.0.48:

Toughen \Tough"en\, v. i. & t. [imp. & p. p. Toughened; p. pr.
   & vb. n. Toughening.]
   To grow or make tough, or tougher.
   [1913 Webster]


WordNet (r) 3.0 (2006):

toughen
    v 1: make tough or tougher; "This experience will toughen her"