1) Attestable 2) Certifiable 3) Clearly evident 4) Confirmable 5) Incontestable 6) Incontestible 7) Incontrovertible 8) Provable 9) Supportable 10) Unarguable 11) Verifiable 12) Watertight 1) Delotos 2) Evincible 3) Incontestable 4) Incontestible 5) Obvious 6) Provable 
• (a.) Proved; apparent. • (a.) Capable of being demonstrated; that can be proved beyond doubt or question.
De·mon'stra·ble adjective [ Latin demonstrabilis : confer Old French demonstrable , French démontrable .] 1. Capable of being demonstrated; that can be proved beyond doubt or question. « The grand articles of our belief are as demonstrable as geometry.�...
[adj] - capable of being demonstrated or proved 2. [adj] - necessarily or demonstrably true
demonstrable, demonstrability 1. The capability of being demonstrated or logically proven. 2. Obvious or apparent: Her lies were demonstrable. 3. So obvious as to be readily recognized. 4. Capable of being shown to exist or to be true: 'There was demonstrable proof that he set the fire.'
incontrovertible adjective necessarily or demonstrably true; `demonstrable truths`
capable of being demonstrated or proved. · clearly evident; obvious: a demonstrable lack of concern for the general welfare.
[Intelligent words] capable of being proved