Definition of inscrutable adjective from the Oxford Advanced American Dictionary

 

inscrutable

 adjective
adjective
NAmE//ɪnˈskrut̮əbl//
 
 
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if a person or their expression is inscrutable, it is hard to know what they are thinking or feeling, because they do not show any emotion
inscrutability
 
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NAmE//ɪnˌskrut̮əˈbɪlət̮i//
 
noun [uncountable]
inscrutably
 
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NAmE//ɪnˈskrut̮əbli//
 
adverb
See the Oxford Advanced Learner's Dictionary entry: inscrutable