fair to middling
Neither good nor bad; mediocre; lukewarm. Despite reviews that were fair to middling, the film was a huge box-office success. A: "How was your time in France?" B: "Eh, fair to middling. I expected it to be a lot better, to be honest."
fair to middlin'
Rur. mediocre; not bad but not good. (Middling means 'of average quality.') Tom: How are you feeling today? Bill: Fair to middlin'. My sewing is excellent, but my cooking is only fair to middlin'.