17
blank(expression, adjective, person, dull, show)
13
deadpan(expression, adjective, dull, show, indifferent)
13
vacant
11
empty(adjective, ineffective, fruitless)
11
impassive(adjective, dull, dead, blank, unfeeling)
10
vacuous
10
poker-faced(adjective, dull, dead, blank, unfeeling)
10
dull(adjective, dead, impassive, monotonous, neutral)
8
unexpressive
7
inexpressive(expression, adjective, dull, show, indifferent)
5
stolid(adjective, dull, dead, blank, impassive)
4
inscrutable(adjective, dull, dead, blank, impassive)
4
wooden(adjective, dull, dead, blank, impassive)
3
chilly(adjective, person, feelings, response, emotions)
3
cold(adjective, unfriendly, blank, unfeeling, unemotional)
3
dead(adjective, informal)
3
foolish
3
stony(adjective, person, hard, feelings, response)
3
stupid(adjective, empty)
3
lackluster
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APASmart Define. (2016). expressionless thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/expressionless/thesaurus/synonyms
ChicagoSmart Define. 2016. "expressionless thesaurus" https://smartdefine.org/expressionless/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, expressionless thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/expressionless/thesaurus/synonyms>.
MLASmart Define. "expressionless thesaurus" 23 March 2016. Web. 20 September 2026. <https://smartdefine.org/expressionless/thesaurus/synonyms>