get well
To recover one's health. Joan was in the hospital last month, but she's gotten well since then. I heard you have the flu, so I hope you get well soon!
get well
to become healthy again. Ann had a cold for a week, and then she got well. Hurry up and get well!
get well
Recover from illness, as in I hope you get well soon. This idiom uses well in the sense of "in good health," a usage dating from the mid-1500s.