1.
Someone who is ~ is not involved in a particular situation or not likely to benefit from it and is therefore able to act in a fair and unselfish way.
Scientists, of course, can be expected to be impartial and ~...
= impartial
ADJ
2.
If you are ~ in something, you are not interested in it. Some users of English believe that it is not correct to use ~ with this meaning.
= uninterested
ADJ: oft ADJ in n