indifferent

characterized by a lack of partiality

“a properly indifferent jury”

showing no care or concern in attitude or action

“indifferent to the sufferings of others”

unwilling or refusing to pay heed

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)”

marked by a lack of interest

“the universe is neither hostile nor friendly; it is simply indifferent”

being neither good nor bad

“an indifferent performance”

having only a limited ability to react chemically; chemically inactive

“an indifferent chemical in a reaction”

fairly poor to not very good

“has an indifferent singing voice”

marked by no especial liking or dislike or preference for one thing over another

“indifferent about which book you would give them”

neither too great nor too little

“a couple of indifferent hills to climb”