The Collaborative International Dictionary
Substitutive
Substitutive \Sub"sti*tu`tive\, a. [Cf. F. substitutif, L.
substitutivus conditional.]
Tending to afford or furnish a substitute; making
substitution; capable of being substituted.
--Bp. Wilkins.
Wiktionary
substitutive
a. Characteristic of, or serving as a substitute