Fair to middling
Definition 1 of 1
Pro Tip 1/3Colloquial Use
The phrase is used in casual, informal conversations more than in formal writing or speeches. 
I'm feeling fair to middling today, just hanging in there.
Pro Tip 2/3Neutral Mood
'Fair to middling' suggests a mood that's neither too good nor too bad, expressing a balanced state. 
How's your day going? - It's fair to middling.
Pro Tip 3/3Understatement
Sometimes, it is used as an understatement for modesty or to imply that things could be better. 
Business is fair to middling, but we're hoping it'll pick up soon.