| adjective | marked by a lack of interest “an apathetic audience” |
| adjective | showing no care or concern in attitude or action “indifferent to the sufferings of others” |
| adjective | (usually followed by `to') unwilling or refusing to pay heed “deaf to her warnings” |
| adjective | (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)” |
| adjective | fairly poor to not very good “has an indifferent singing voice” |
| adjective | having only a limited ability to react chemically; chemically inactive “inert matter” |
| adjective | marked by no especial liking or dislike or preference for one thing over another “indifferent about which book you would give them” |
| adjective | characterized by a lack of partiality “a properly indifferent jury” |
| adjective | being neither good nor bad “an indifferent performance” |
| adjective | neither too great nor too little “a couple of indifferent hills to climb” |
| apathy | noun | an absence of emotion or enthusiasm |
| indifference | noun | the trait of lacking enthusiasm for or interest in things generally |
| immateriality | noun | complete irrelevance requiring no further consideration |
| neutrality | noun | pH value of 7 |