Would you be kind enough to tell me whether I am right with my interpretation of the expression in bold in the following sentence?
Look, look, Septimus!" she cried. For Dr. Holmes had told her to make her husband (who had nothing whatever seriously the matter with him but was a little out of sorts) take an interest in things outside himself.
out of sorts = irritable, grouchy
Thanks for your efforts.
Not a teacher only a native.
I think you've slightly misunderstood the phrase, when a person is out of sorts, they are acting a bit unusual, somethings not quite right with them. Usually it is when someone is feeling down or sad.