non-essential

[1]	unessential , inessential , nonentity , cipher , zero , nobody , extra , supernumerary , spear-carrier , (Colloq) nothing , (Slang) (US) nebbish

adj.

[1]

non-vital , unessential , unneeded , unnecessary , needless , inconsequential , insignificant , unimportant , superfluous , dispensable , expendable , gratuitous , uncalled-for , extraneous , peripheral , extra , de trop , adventitious , additional , supplemental , adscititious , redundant , accessory , subordinate , secondary , subsidiary