I stumbled across the word on vocabulary.com. It appears the noun hasn’t been used in any literary form, at least, none recorded by the website. Websters and Dictionary.com have not even the word in their entries.
The sentimental feeling you have about someone you once loved but no longer do.
Here’s an attempt in a form of a haiku:
dull skies and rain and
liquid sunshine, the baffling
For how can she possess sentimental feeling towards him whom she no longer loves? A phenomenon, like liquid sunshine, of being human, I guess. Or maybe I am just a cold and heartless man. Haha.
Just trying to understand. ❧