prescindible
dispensable
dispense
to do without
+
-ible
adjective suffix
Prescindible means dispensable and is an adjective1 (-ible1) related to the English word dispense0 in the sense of to do without0.
adjective
  1. dispensable
    Dispensable or not essential
    Ese gasto es prescindible en nuestro presupuesto. // That expense is dispensable in our budget.