Search Result for "unimpressionable": 
Wordnet 3.0

ADJECTIVE (1)

1. not sensitive or susceptible to impression;
- Example: "an unimpressionable mind"



The Collaborative International Dictionary of English v.0.48:

Unimpressionable \Unimpressionable\
   See impressionable.


WordNet (r) 3.0 (2006):

unimpressionable
    adj 1: not sensitive or susceptible to impression; "an
           unimpressionable mind" [ant: impressible,
           impressionable, waxy]