What is the correct spelling for SUINNINESS?

If you meant to write "suniness" instead of "suinniness", you're on the right track! The correct suggestion would be to drop the extra "n" in the middle. "Suniness" refers to the quality of being sunny, bringing warmth and brightness.

Correct spellings
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Correct spellings for SUINNINESS

  • sunniness The sunniness contrasts harshly with the darkness of the night.