Could you explain "He over his grippe yet."?
Here's an extract from The catcher in the rye by J. D. Salinger;

"How've you been,
Mrs. Spencer?" I said again, only louder, so she'd hear me. "I've been just
fine, Holden." She closed the closet door. "How have you been?" The way she
asked me, I knew right away old Spencer'd told her I'd been kicked out.
"Fine," I said. "How's Mr. Spencer? He over his grippe yet?" "Over it!
Holden, he's behaving like a perfect--I don't know what... He's in his room,
dear. Go right in."

Question

Could you explain "He over his grippe yet."?
Here's an extract from The catcher in the rye by J. D. Salinger;

"How've you been,
Mrs. Spencer?" I said again, only louder,  so she'd hear me. "I've been just
fine, Holden." She  closed the closet door. "How have you been?" The way she
asked me, I  knew  right away  old Spencer'd told her I'd been  kicked  out.
"Fine," I said.  "How's  Mr.  Spencer? He  over  his grippe yet?" "Over  it!
Holden, he's behaving like a perfect--I don't know what... He's in his room,
dear. Go right in."

Answer

It is the German word for "flu."  If you "get over" something, it means you recover from it (i.e., get well again).

Answer

I agree with Brad - it refers to having the flu. A number of languages use some variation on "grippe" to describe this.

Answer

A "gripe" is a strong feeling we have when someone has treated us unfairly. Example: The butcher charged me $12 dollars for 4 pork cutlets, and the sign said "Sale. Pork chops $2.25 each." So, I took my gripe to the manager of the supermarket.    In this case of Holden's feelings, his gripe may be his overall depressed, turbulent emotional state. A gripe is any strong feeling that eats away at us with its weight, or problematic nature.