Antonyms of UNSOUND

Examples of usage:

  1. The sound self was observing the unsound self, but apparently with no power over it. "Harvest" by Mrs. Humphry Ward
  2. One of the unforeseen results was to insure that they should have unsound bodies. "Health Work in the Public Schools" by Leonard P. Ayres and May Ayres
  3. It does seem to me that the present very general eclipse of the old Roman virtue of filial piety lies at the root of much of the unsound work, and of the undone work, of the present day. "Stray Thoughts for Girls" by Lucy H. M. Soulsby
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