English

Definition of nightmarish adjective from the Oxford Advanced Learner's Dictionary

 

nightmarish

 adjective
adjective
BrE BrE//ˈnaɪtmeərɪʃ//
 
; NAmE NAmE//ˈnaɪtmerɪʃ//
 
 
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very frightening and unpleasant; very difficult to deal with nightmarish living conditions