indifferent (adj.)

late 14c., "unbiased, impartial, not preferring one to the other" (of persons), "alike, equal" (of things), from Old French indifferent "impartial" or directly from Latin indifferentem (nominative indifferens) "not differing, not particular, of no consequence, neither good nor evil," from in- "not, opposite of" (see in- (1)) + differens, present participle of differre "set apart" (see differ). Extended sense of "apathetic, no more inclined to one thing than to another" first recorded early 15c.; that of "neither good nor bad" is from 1530s, on notion of "neither more nor less advantageous," but since 17c. it has tended toward "rather bad."

updated on November 12, 2015

Definitions of indifferent from WordNet

indifferent (adj.)
being neither good nor bad;
an indifferent performance
a gifted painter but an indifferent actor
Synonyms: so-so
indifferent (adj.)
(usually followed by `to') unwilling or refusing to pay heed;
Synonyms: deaf
indifferent (adj.)
marked by a lack of interest; "the universe is neither hostile nor friendly; it is simply indifferent";
Synonyms: apathetic
indifferent (adj.)
showing no care or concern in attitude or action;
indifferent to her plea
indifferent to the sufferings of others
indifferent (adj.)
(often followed by `to') lacking importance; not mattering one way or the other;
whether you choose to do it or not is a matter that is quite immaterial (or indifferent)
what others think is altogether indifferent to him
Synonyms: immaterial
indifferent (adj.)
fairly poor to not very good;
has indifferent qualifications for the job
has an indifferent singing voice
indifferent (adj.)
having only a limited ability to react chemically; chemically inactive;
an indifferent chemical in a reaction
Synonyms: inert / neutral
indifferent (adj.)
marked by no especial liking or dislike or preference for one thing over another;
indifferent about which book you would give them
was indifferent to their acceptance or rejection of her invitation
indifferent (adj.)
characterized by a lack of partiality;
a properly indifferent jury
Synonyms: unbiased / unbiassed
indifferent (adj.)
neither too great nor too little;
a couple of indifferent hills to climb
Etymologies are not definitions. From, not affiliated with etymonline.