"More or less" means nearly or approximately, implying that it is not exact. "I'm more or less done with the housework." = I may be finished with the housework, but there may still be a couple of small things to do. 'So-so' = mediocre, lacking in quality. Not horrible or awful, but not excellent either. "How did you like the movie?" "It was so-so. It had some good parts, but went on for too long."

Mona: How are you feeling today? James: So so. ***** Mona: Do you love me? James: More or less. (Mona starts to cry.)