7
lacking interest
6
negative(adjective, bad, doubtful, pessimistic, cynical)
6
neutral(adjective, indifferent, listless, unconvinced, uninspired)
6
quiet(adjective, calm, indifferent, restrained, subdued)
6
reluctant(adjective, difficult, awkward, antagonistic, forced)
6
spiritless(adjective, dull, cool, weak, easy)
6
unimpressed(adjective, calm, indifferent, restrained, apathetic)
5
aloof(adjective, calm, person, cool, indifferent)
5
insouciant
5
perfunctory(adjective, indifferent, enthusiastic, apathetic, listless)
5
staid(adjective, calm, indifferent, restrained, subdued)
5
unemotional(adjective, indifferent, restrained, unfriendly, emotionless)
5
unmoved(adjective, calm, dull, cool, flat)
5
unwilling(adjective, bad, weak, gloomy, mood)
4
backward(adjective, person, feelings, forced, averse)
4
blasé(adjective, indifferent, apathetic, unconvinced, uninspired)
4
frosty(adjective, person, cool, feelings, aloof)
4
hostile(adjective, person, feelings, antagonistic, pessimistic)
4
languid(adjective, dull, weak, easy, flat)
4
loath(adjective, difficult, awkward, antagonistic, forced)
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APASmart Define. (2016). unenthusiastic thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unenthusiastic/thesaurus/synonyms
ChicagoSmart Define. 2016. "unenthusiastic thesaurus" https://smartdefine.org/unenthusiastic/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, unenthusiastic thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unenthusiastic/thesaurus/synonyms>.
MLASmart Define. "unenthusiastic thesaurus" 23 March 2016. Web. 28 September 2026. <https://smartdefine.org/unenthusiastic/thesaurus/synonyms>