Synonyms and related words :
Laodicean, Olympian, airy, aloof, apathetic, average, backward, balking, balky, benumbed, betwixt and between, blah, blase, bored, by-the-way, callous, careless, casual, centrist, chill, cold, comatose, commonplace, cool, cursory, dead, degage, desensitized, detached, devil-may-care, dilatory, dilute, diluted, disinterested, dispassionate, disregardant, disregardful, distant, distracted, distrait, dull, easy, easygoing, emotionless, equitable, even, evenhanded, everyday, fade, fair, fair to middling, fairish, fervorless, fifty-fifty, flat, flavorless, flippant, forgetful, free and easy, frigid, glacial, grudging, gruelly, half-and-half, halfhearted, heartless, hebetudinous, heedless, hopeless, icy, immaterial, impartial, impassive, impersonal, impotent, imprecise, in a stupor, inadvertent, inane, inappreciable, inattentive, inconsequential, inconsiderate, incurious, independent, indevotional, indevout, indifferentist, inferior, inobservant, insensible, insensitive, insignificant, insipid, insouciant, intermediate, jejune, just, lackadaisical, lackluster, laggard, languid, lax, lazy, lenient, lethargic, lightweight, listless, loath, loose, lukewarm, mean, mediocre, medium, middling, midway, mild, milk-and-water, mindless, minor, moderate, modest, namby-pamby, negligent, neuter, neutral, nonaligned, nonchalant, noncommitted, nonobservant, nonpartisan, nonreligious, not bad, nugatory, numb, numbed, objective, oblivious, of a kind, of a sort, of sorts, offhand, on the fence, ordinary, overindulgent, overpermissive, pappy, passable, passive, perfunctory, permissive, phlegmatic, pluckless, pococurante, poor, pulpy, reckless, regardless, relaxed, reluctant, remiss, remote, removed, renitent, resigned, respectable, respectless, restive, sapless, savorless, slack, slight, slipshod, sloppy, slow, slow to, sluggish, so so, so-so, soft, soporific, spiceless, spiritless, spunkless, stale, stoic, stolid, stupefied, supine, tactless, tasteless, tedious, tepid, thin, third-force, third-world, thoughtless, tolerable, torpid, trifling, trivial, unbiased, uncaring, uncommitted, uncompassionate, unconcerned, undazzled, undevout, undiplomatic, undistinguished, undutiful, unemotional, unenthusiastic, unfeeling, unflavored, unheedful, unheeding, unimportant, uninfluenced, uninquiring, uninspired, uninterested, uninvolved, unjaundiced, unmarking, unmindful, unnoticing, unnoting, unobservant, unobserving, unprejudiced, unprepared, unprepossessed, unready, unreligious, unremarking, unrestrained, unsavory, unsolicitous, unswayed, unsympathetic, untactful, unthinking, unzealous, vapid, washy, watered, watered-down, watery, weak, wishy-washy, withdrawn, zealless