More confusion! LOL!! Grim is like sad and bleak. Like hopeless. Isn’t it???
My husband uses "grim" to mean unpleasant or even disgusting/gross. Like "he walked out of the pub and was sick just outside the door... it was grim." I have never heard the word used to describe health before.
I don't use "sick" anymore unless I specifically mean nausea. I might say I "feel ill" or "I feel unwell". I've never once said "poorly", but I know it's the common way to indicate diminished health. I just can't do it without feeling ridiculous. Similarly, I can't say tomahto. But I
can say banahnuh, so, baby steps.