undiseased

un- +‎ diseased

undiseased (comparative more undiseased, superlative most undiseased)

1. Not diseased.
   • 1884, George Willis Cooke, George Eliot; A Critical Study of Her Life, Writings & Philosophy‎:

     He was a contemplative, rather stout gentleman, of excellent digestion--of quiet perceptions, undiseased by hypothesis, happy in his inability to know the causes of things, preferring the things themselves.

   • 1913, Frederick William Roe (edit. and select.), English Prose‎:

     But loveliness of colour, perfectness of form, endlessness of change, wonderfulness of structure, are precious to all undiseased human minds; and the superiority of the mountains in all these things to the lowland is, I repeat, as measurable as the richness of a painted window matched with a white one, or the wealth of a museum compared with that of a simply furnished chamber.