expressionless
adjective
- with little/no expressiveness/feeling, not conveying any personality/emotion
Wiktionary
adj
Etymology: Etymology tree English expression Proto-Indo-European *lewh₁- Proto-Indo-European *lewHs-der. Proto-Germanic *leusaną Proto-Germanic *lausaz Proto-Germanic *-lausaz Proto-West Germanic *-laus Old English -lēas Middle English -les English -less English expressionless From expression + -less.
- without expression