Synonyms of unzealous

adjectiveNot zealous.

• languidOf a person or their actions, character, etc.: lacking drive, emotion, or enthusiasm; apathetic, listless, spiritless...
• spiritlessLacking energy, drive, motivation or emotion. Enervated.
• adiaphroistic
• apathetic
• apathisticalApathetic; unemotional.
• blaséUnimpressed, indifferent, especially because of overfamiliarity.
• blithe
• deaf
• cool
• shiftless
• dispassionateNot showing, and not affected by, emotion, bias, or prejudice.
• dull
• enervatedWeakened, debilitated or deprived of strength or vitality.
• gallionic
• halfheartedLacking full energy, effort, commitment, or resolve.
• impassiveHaving, or revealing, no emotion.
• ineffervescibleNot effervescible.
• insouciantCasually unconcerned; carefree, indifferent, nonchalant.
• indifferentAmbivalent; unconcerned; uninterested, apathetic.
• insensibleIncapable of mental feeling; indifferent.
• jadedBored or lacking enthusiasm, typically after having been overexposed to, or having consumed too much of something.
• languorousLacking energy, spirit, liveliness or vitality; languid, lackadaisical.
• lethargicIndifferent, apathetic.
• listlessLacking energy, enthusiasm, or liveliness.
• lackadaisicalShowing no interest, vigor, determination, or enthusiasm.
• lotophagousRelating to the Lotophagi (lotus eaters).
• lukewarmUnenthusiastic (about a proposal or an idea).
• mehApathetic; unenthusiastic.
• mopeyGiven to moping; in a depressed condition, low in spirits; lackadaisical.
• nonchalant
• nonplussed USUnaffected, unfazed; unimpressed.
• otioseOf a person, possessing a bored indolence.
• phlegmaticNot easily excited to action or passion; calm; sluggish.
• pococuranteApathetic, indifferent or nonchalant.
• supineReluctant to take action due to indifference or moral weakness; apathetic or passive towards something.
• tepidUninterested; exhibiting little passion or eagerness; lukewarm.
• torpidLazy, lethargic or apathetic.
• unarousedNot aroused.
• uncaringCharacterized by a lack of care; not caring.
• unconcernedIndifferent and having no interest; aloof.
• unenthusiasticWithout enthusiasm; unexcited.
• unimpressibleNot impressible; not sensitive; apathetic.
• uninterestedNot interested; indifferent, not concerned.
• unlivelyNot lively.
• unmovedNot affected emotionally, or not showing emotion.
• untouchedNot influenced, affected or swayed.
• world-wearyBored with life.
• heartless rareListless, unenthusiastic.
• Laodicean archaicHalf-hearted or apathetic, especially with regards to religion or politics.
• torpedinous archaicStupefying; dull; torpid.