conclusiveness

WordReference Random House Learner's Dictionary of American English © 2025

con•clu•sive /kənˈklusɪv/   adj. 

1. serving to settle a question;
   decisive:
   The conclusive evidence was his fingerprint on the gun.

con•clu•sive•ly, adv.: 

The prosecutor proved her point conclusively.

con•clu•sive•ness, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2025

con•clu•sive  (kən klo̅o̅′siv), adj. 

1. serving to settle or decide a question;
   decisive;
   convincing:
   conclusive evidence.
2. tending to terminate;
   closing.

• Late Latin conclūsīvus, equivalent. to Latin conclūs(us) (past participle of conclūdere to conclude; see conclusion) + -īvus -ive
• 1580–90

con•clu′sive•ly, adv. 
con•clu′sive•ness, n. 
Synonyms

• 1. definitive, determining.