Illness vs Unwellness - What's the difference?
illness | unwellness |
(countable) An instance of a disease or poor health.
(uncountable) A state of bad health or disease.
The state or characteristic of being unwell; a feeling of slight to moderate sickliness.
*1887 , , The Autobiography of Charles Darwin , ch. 5:
*:During the three years and eight months whilst we resided in London, I did less scientific work, though I worked as hard as I possibly could, than during any other equal length of time in my life. This was owing to frequently recurring unwellness , and to one long and serious illness.