Synonyms of poker-faced

2 Syllables

neutral, secret, cold-fish, deadpan, mystic

3 Syllables

mysterial, arcane, sphinxlike, difficult, masklike, iceberg, passive, bystanding, ambiguous

4 Syllables

unknowable, enigmatic, inscrutable, impassive, unpassioned, non-combatant, expressionless, nonresistant, impersonal, uninvolved, pokerfaced, noncombatant, nonaligned, middle-of-road, cabalistic, unreadable

5 Syllables

unaccountable, unfathomable, dispassionate, inexplicable, unexplainable, inexcitable, impenetrable, nonbelligerent

6 Syllables

unintelligible, undiscoverable, incomprehensible, nonparticipating