"called for additional troops"; "need extra help"; "an extra pair of shoes"
"trying to lose excess weight"; "found some extra change lying on the dresser"; "yet another book on heraldry might be thought redundant"; "skills made redundant by technological advance"; "sleeping in the spare room"; "supernumerary ornamentation"; "it was supererogatory of her to gloat"; "delete superfluous (or unnecessary) words"; "extra ribs as well as other supernumerary internal parts"; "surplus cheese distributed to the needy"
"a special holiday flight"; "put on special buses for the big game"
"an extra fast car"
"he always carried extras in case of an emergency"
"partial paralysis resulted in an atrophied left arm"
"a nightmare population of gaunt men and skeletal boys"; "eyes were haggard and cavernous"; "small pinched faces"; "kept life in his wasted frame only by grim concentration"
"otiose lines in a play"; "advice is wasted words"; "a pointless remark"; "a life essentially purposeless"; "senseless violence"
"squandered money cannot be replaced"; "a wasted effort"