Supernumerary – being in excess of the usual, proper, or prescribed number; addition; extra
“Everyone was busy – except him. The pilots were up twice a day or more, exercising with their U.S. Air Force and Navy Counterparts working from shore bases. The ships were practicing surface war tactics. As Admiral White had said at breakfast, it had developed into a jolly good extension of NIFTY DOLPHIN. Ryan didn’t like being supernumerary.
The hunt for red october, Tom Clancy