unconditioned
adjective /ˌʌnkənˈdɪʃnd/
  /ˌʌnkənˈdɪʃnd/
(psychology- (of behaviour行为 非条件的 - an unconditioned response无条件反应 
 Collocations DictionaryUnconditioned is used with these nouns:- stimulus
 
- an unconditioned response