Indifferent (adjective)

1. Having no strong feelings or preferences; impartial.
2. Showing no interest or concern; apathetic.
3. Not of a good quality; mediocre.

Origin:

From latin indifferentem, present participle of indifferens ("not differen.t")

Examples:

1. He was indifferent to the outcome of the game.
2. She was indifferent to the political situation.
3. The customer service was indifferent at best.
4. His indifferent attitude was a problem.
5. The indifferent performance was not up to the usual standards.