• synonyms


See more synonyms for conclusive on Thesaurus.com
  1. serving to settle or decide a question; decisive; convincing: conclusive evidence.
  2. tending to terminate; closing.
Show More

Origin of conclusive

1580–90; < Late Latin conclūsīvus, equivalent to Latin conclūs(us) (past participle of conclūdere to conclude; see conclusion) + -īvus -ive
Related formscon·clu·sive·ly, adverbcon·clu·sive·ness, nounnon·con·clu·sive, adjectivenon·con·clu·sive·ly, adverbnon·con·clu·sive·ness, noun

Synonyms for conclusive

See more synonyms for on Thesaurus.com
1. definitive, determining.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for conclusively

decisively, definitively, convincingly, positively, determinately

Examples from the Web for conclusively

Contemporary Examples of conclusively

Historical Examples of conclusively

British Dictionary definitions for conclusively


  1. putting an end to doubt; decisive; final
  2. approaching or involving an end or conclusion
Show More
Derived Formsconclusively, adverbconclusiveness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for conclusively


1550s, "in conclusion," from conclusive + -ly (2). Meaning "decisively" is recorded from 1748.

Show More



1610s, "occurring at the end," from French conclusif, from Late Latin conclusivus, from conclus-, past participle stem of concludere (see conclude). Meaning "definitive, decisive, convincing" (putting an end to debate) is from 1640s. Related: Conclusiveness.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper