Search Result for "second nature":
Wordnet 3.0

NOUN (1)

1. acquired behavior that is practiced so long it seems innate; 



WordNet (r) 3.0 (2006):

second nature
    n 1: acquired behavior that is practiced so long it seems innate


Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "second nature":
   automatism, bad habit, characteristic, creature of habit, custom,
   force of habit, habit, habit pattern, habitude, pattern,
   peculiarity, practice, praxis, stereotype, stereotyped behavior,
   trick, usage, use, way, wont