We don't have synonyms for endable yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are enable, mendable and bendable.
°(obsolete) To give strength or ability to; to make firm and strong.
°To make able (to do, or to be, something); to confer sufficient power upon; to furnish with means, opportunities, and the like; to render competent for; to empower; to endow.
°(obsolete) To give strength or ability to; to make firm and strong.
°To make able (to do, or to be, something); to confer sufficient power upon; to furnish with means, opportunities, and the like; to render competent for; to empower; to endow.