The state or characteristic of being unwell; a feeling of slight to moderate sickliness.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "unwellness" in a sentence
"But it's probably revelatory of my deep psychological unwellness or something."
"In my opinion, we have not admitted, let alone addressed, our emotional unwellness in this decade following 9/11."
"The idea of heat as a feature of and metaphor for unwellness, both individual and social, was associated with more than witchcraft since, for example, malaise associated with * mulungu spirits were also tied etiologically to heat at a cognitive and physical level."