• (a.) Tending to afford or furnish a substitute; making substitution; capable of being substituted.
Sub'sti·tu`tive adjective [ Confer French substitutif , Latin substitutivus conditional.] Tending to afford or furnish a substitute; making substitution; capable of being substituted. Bp. Wilkins. 
substitutive Related word families intertwined with 'to place, placing, to put; to add; to stay; to attach' word units: fix-; pon-; prosth-; the-, thes-.
serving as or capable of serving as a substitute. · pertaining to or involving substitution.