perfunctory

having or showing a lack of interest or concern the violinist delivered a perfunctory performance that displayed none of the passion and warmth he was once known for Synonyms apathetic, casual, complacent, disinterested, incurious, insensible, insouciant, nonchalant, indifferent, pococurante, unconcerned, uncurious, uninterestedRelated Words halfhearted, lukewarm, tepid; aloof, cold, numb, remote, unemotional; callous, hard-hearted, insensitive, unfeeling; calm, cool, detached, dispassionate; careless, heedless, mindless; impassive, impervious, phlegmatic, stoic (or stoical), stolid; lethargic, listless; unimpressedNear Antonyms attentive, aware, conscientious, heedful, mindful; caring, sensitive, warmhearted; ardent, fervent, keen, passionate, warm, zealousAntonyms concerned, interested