1) Closing 2) Convincing 3) Decisive 4) Definitive 5) Determinate 6) Forming an end or termination 7) French word used in English 8) Tending to terminate 1) Conclusory 2) Decisive 3) Final 4) Indisputable 5) Unequivocal 6) Univocal 
• (a.) Belonging to a close or termination; decisive; convincing; putting an end to debate or question; leading to, or involving, a conclusion or decision.
[Adjective] Convincing, putting an end to doubt.
Con·clu'sive adjective [ Confer French conclusif .] Belonging to a close or termination; decisive; convincing; putting an end to debate or question; leading to, or involving, a conclusion or decision. « Secret reasons . . . equally conclusive for us as they were for them. Rogers....
What puts an end to a thing. A conclusive presumption of law is one which cannot be contradicted even by direct and positive proof. Take, for example, the presumption that an infant is incapable of judging whether it is or is not against his interest. When infancy is pleaded and proved the plaintiff cannot show that the defendant was within one day...
[adj] - final and deciding 2. [adj] - forming an end or termination
adjective final and deciding; `the conclusive reason`
serving to settle or decide a question; decisive; convincing: conclusive evidence. · tending to terminate; closing.