dis·in·ter·est·ed·ness /-tədnəs/
Dis·in·ter·est·ed·ness, n. The state or quality of being disinterested; impartiality.
That perfect disinterestedness and self-devotion of which man seems to be incapable, but which is sometimes found in woman. --Macaulay.
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disinterestedness
n : freedom from bias or selfish motives