My sweet Catherine, in your generous heart I know it would signify nothing; but we must not expect such disinterestedness in many.
The needful was comprised in Mr. Morland’s promise; his honour was pledged to make everything easy; and by what means their income was to be formed, whether landed property were to be resigned, or funded money made over, was a matter in which her disinterested spirit took no concern.
…which this thought led could only be dispersed by a dependence on the effect of that particular partiality, which, as she was given to understand by his words as well as his actions, she had from the first been so fortunate as to excite in the general; and by a recollection of some most generous and disinterested sentiments on the subject of money, which she had more than once heard him utter, and which tempted her to think his disposition in such matters misunderstood by his children.
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Show samples from other sources
All the Finches had straight incisive eyebrows and heavy-lidded eyes; when they looked slant-wise, up, or straight ahead, a disinterested observer would catch a glimpse of what May-comb called Family Resemblance.
Harper Lee -- Go Set a Watchman
He looks up at them, disinterested and maybe disgusted by the baby, because he wanders deeper into the recesses of the cluttered store to get away.