Hello. - I was feeling out of sorts, but your flowers cheered me up. - Say, are you sure you're feeling all right? / Sure. I'm just a little out of sorts. - Are you all right? You look pale. / I feel a little out of sorts. I think I'll go lie down in the infirmary. --------------- The Oxford Dictionary says: out of sorts (especially BrE) ill/sick or upset: She was tired and out of sorts by the time she arrived home. Are you feeling all right? You look a bit out of sorts. --------------- Although the dictionary says, "especially BrE," the phrase is often heard in the US, isn't it?