Synonyms for Indifferent:

adj.

all (adjective)
apathetic.
disinterested (adjective)
impersonal, detached, impartial, uninfluenced, apathetic, unbiased, disinterested, neutral, dispassionate.
incurious (adjective)
careless, detached, regardless, disinterested, uninquisitive, heedless, unconcerned, unmindful, uninterested, incurious, dispassionate.
indifferent (adjective)
lukewarm, apathetic, glacial, uncaring, unconcerned, passive, neutral, detached, cold, impartial, perfunctory, cool, easygoing, nonchalant, insouciant, impassive, uninterested, dispassionate, disinterested, Half-hearted, unwilling, insensible.
inert (adjective)
lethargic.
lethargic (adjective)
lymphatic.
mediocre (adjective)
unexceptional.
nonpartisan (adjective)
nonpartisan, uninfluenced.
numb (adjective)
anesthetized.
reckless (adjective)
hectic, brash, inattentive, rash, frantic, careless, heedless, nonchalant, imprudent, foolhardy, daring, unmindful, wild, negligent, thoughtless, reckless, irresponsible.
remote (adjective)
aloof.
unenthusiastic (adjective)
unenthusiastic.
unexcitable (adjective)
stolid.

n.

haughty, standoffish, restless, condescending, impassive, glacial, icy, stoical, unmoved, uncommunicative, silent, disdainful, superior, lymphatic, supercilious, bored, chill, supine, uninspired, diffident, stolid, excited, remote, fed up, scornful, distant, reticent, world-weary, impervious, blase, phlegmatic, unresponsive, unenthusiastic, reserved, snobbish. feelings. insensible, lethargic. concern, uninvolved, attitude. garden, undistinguished, good, formulaic, average, plain, cut-and-dried, ordinary, common, usual, run-of-the-mill, unremarkable, garden-variety, unexceptional, stock, commonplace, routine, mediocre, standard. ordinary (noun)
average, mediocre, routine, undistinguished, common, dull, fair.

v.

cool (verb)
standoffish.

Other synonyms:

bored, fair-minded, restless, garden-variety, unexceptional, formulaic, world-weary, cut-and-dried, blase, unremarkable, uninvolved, uninspired. mediocre, run-of-the-mill, unprejudiced, garden, unmoved, unresponsive, undistinguished, chill. equitable, nonpartisan, distant, commonplace, square. just. average. plain. apathetic
phlegmatic, unenthusiastic.
commonplace
common.
impassive
stoical.
indolent
supine.
scornful
disdainful.
unreceptive
impervious.

Usage examples for indifferent

  1. He put the piece of money into the attendant's hand, and then began to talk with him, asking various indifferent questions about the building; and finally he asked him where that closed door led to. – Rollo in Holland by Jacob Abbott
  2. He was indifferent that was all. – Original Short Stories, Volume 12 (of 13) by Guy de Maupassant Last Updated: February 13, 2009
  3. Cliffe gave a slight start, then looked indifferent – The Marriage of William Ashe by Mrs. Humphry Ward