conclusive

Từ điển Oxford Advanced Learner 8th

con·clu·sive AW BrE [kənˈkluːsɪv] NAmE [kənˈkluːsɪv] adjective
proving sth, and allowing no doubt or confusion
•conclusive evidence/proof/results
•The evidence is by no means conclusive.
Opp: ↑inconclusive
Derived Word: ↑conclusively

Word Origin:
[conclusive conclusively] late 16th cent. (in the sense ‘summing up’): from late Latin conclusivus, from Latin conclus- ‘closed up’, from the verb concludere, from con- ‘completely’ + claudere ‘to shut’.

Example Bank:
•They produced some fairly conclusive evidence.
•In the absence of any conclusive proof against the man, charges will not be brought.
•It's difficult to get conclusive evidence of the existence of black holes in space.
•Studies of gender differences in learning are far from conclusive.
•The results of the test were not conclusive.