inscrutable
[adjective]
Synonyms:
- enigmatic, blank, deadpan, impenetrable, poker-faced (informal)
- mysterious, hidden, incomprehensible, inexplicable, unexplainable, unfathomable, unintelligible

[TahlilGaran] English Synonym Dictionary ▲

in‧scru‧ta‧ble /ɪnˈskruːtəbəl/ adjective
[Date: 1500-1600; Language: Late Latin; Origin: inscrutabilis, from Latin scrutari 'to search']
someone who is inscrutable shows no emotion or reaction in the expression on their face so that it is impossible to know what they are feeling or thinking:
He stood silent and inscrutable.
—inscrutably adverb
—inscrutability /ɪnˌskruːtəˈbɪləti, ɪnˌskruːtəˈbɪlɪti/ noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲