Investable rhymes with:
contestable, digestible, suggestible, adjustable, christabelle, combustable, constable, contestable, cristobal, digestible, harvestable, huxtable, inexhaustible, irresistible, suggestible
contestable, digestible, suggestible, adjustable, christabelle, combustable, constable, contestable, cristobal, digestible, harvestable, huxtable, inexhaustible, irresistible, suggestible