say it: ik-SPRESH-uhn-lis
expressionless is an adjective meaning "deliberately impassive in manner". It carries one recorded sense.
deliberately impassive in manner
“deadpan humor”
“his face remained expressionless as the verdict was read”
Definitions, synonyms and semantic relations for expressionless come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.