Synonyms for Unenthusiastic:

• adj.

  •cold (adjective)
  • unfeeling,
  • distant,
  • imperturbable,
  • frigid,
  • phlegmatic,
  • unresponsive,
  • undemonstrative,
  • reserved,
  • frosty.
  •cool (adjective)
  • offhand,
  • unapproachable,
  • offish,
  • unfriendly,
  • unwelcoming.
  •depressed (adjective)
  • spiritless.
  •faint (adjective)
  • lethargic,
  • enervated,
  • feeble.
  •halfhearted (adjective)
  • passive,
  • impassive,
  • neutral.
  •languid (adjective)
  • weak,
  • faint,
  • laid-back,
  • heavy,
  • slow,
  • weary,
  • torpid,
  • sluggish,
  • inactive.
  •negative (adjective)
  • antagonistic,
  • cynical,
  • balky,
  • gloomy,
  • pessimistic.

• n.

  •
  • uninspired.
  •apathetic (noun)
  • quiet.

• Other synonyms:

  •
  • unimpressed,
  • blase,
  • restive,
  • bored,
  • Half-hearted,
  • disenchanted,
  • apathetic,
  • dismissive,
  • faint-hearted,
  • disheartened,
  • listless,
  • restless.
  •
  • unconcerned,
  • disinterested,
  • ho-hum.
  •
  • flat.
  •Other relevant words:
  • unflappable,
  • phlegmatical,
  • loath,
  • peaceful,
  • balking,
  • loveless,
  • crisp,
  • unattracted,
  • unambitious,
  • easygoing,
  • undisturbed,
  • stolid,
  • insensible,
  • relaxed,
  • composed,
  • unmoved,
  • laggard,
  • temperate,
  • undesirous,
  • indolent,
  • unconstructive,
  • hushed,
  • uneager,
  • perfunctory,
  • cautious,
  • staid,
  • half-baked,
  • calm,
  • chill,
  • averse,
  • unaffected,
  • happy-go-lucky,
  • placid,
  • un-come-at-able,
  • harmful,
  • stoic,
  • grudging,
  • tempered,
  • loth,
  • dilatory,
  • uncaring,
  • unemotional,
  • muted,
  • emotionless,
  • careful,
  • unanimated,
  • leery,
  • mellow,
  • uninvolved,
  • unhelpful,
  • unperturbed,
  • at ease,
  • Pococurante,
  • sedate,
  • Unaspiring,
  • together,
  • unruffled,
  • opposed,
  • glum,
  • Laodicean,
  • subdued,
  • unreceptive,
  • aloof,
  • detached,
  • passionless,
  • chilly,
  • unattainable,
  • restrained,
  • nonchalant,
  • unreachable,
  • backward,
  • Desireless,
  • insensitive,
  • moderate,
  • disinclined,
  • unobtainable,
  • hesitant,
  • untroubled,
  • ungetatable,
  • dull,
  • casual,
  • Renitent,
  • lifeless,
  • insouciant,
  • tranquil,
  • circumspect,
  • nirvanic,
  • low-key,
  • hostile,
  • dispassionate,
  • toned down,
  • unexcited,
  • spent,
  • wary,
  • lackadaisical,
  • careless,
  • chary,
  • repressed,
  • indisposed,
  • cynic,
  • unexcitable,
  • collected.

Antonyms for Unenthusiastic:

• adj.

  • all
    enthusiastic.
  • cold
    warm, zealous, sympathetic, ardent, friendly, interested, fervid.
  • cool
    responsive, approving, kind.
  • faint
    bold, courageous, brave, resolute, strong.
  • halfhearted
    desirous, whole-hearted.
  • languid
    alert, lively, energetic, spirited, vivacious.
  • negative
    good, positive.
  • spiritless
    happy, uplifted.
  • tepid
    cold, hot.
  • unenthusiastic
    animated, excited, eager, keen, wholehearted.
  • Other antonyms:
    ready, engrossed, hearty, evangelistic, warmhearted, raring, overenthusiastic, engaged, agog, passionate, vehement, glowing, avid, wild, dotty, gaga, intense, genial, fiery, impassioned, feverish, crazy, cordial, willing, red hot, exuberant, hot-blooded.