- most reliable or complete, as of a text, author, criticism, study, or the like: the definitive biography of Andrew Jackson.
- serving to define, fix, or specify definitely: to clarify with a definitive statement.
- having its fixed and final form; providing a solution or final answer; satisfying all criteria: the definitive treatment for an infection; a definitive answer to a dilemma.
- Biology. fully developed or formed; complete.
Origin of definitive
SynonymsSee more synonyms for definitive on Thesaurus.com
Examples from the Web for definitively
If this Dear Leader is definitively tied to the Sony hack, we may be at the beginning of an even more dangerous new era.Kim Jong Un’s Kid Gloves Are Now Off
Gordon G. Chang
December 17, 2014
Earlier this year, al Qaeda split with ISIS definitively in a public repudiation of the group.Even a Top Democrat Thinks Obama's Legal Case for War Makes No Sense
September 19, 2014
While we have not definitively located the video, in one video tanks can be seen crossing a pontoon bridge into Ukraine.Russia’s Military Is Already in East Ukraine. Will There Be a Full-Scale Invasion?
August 2, 2014
He is being baited daily to say, definitively, that he is running.Rand Paul’s Daddy Issues
July 28, 2014
Giving these women a platform to speak their minds is a definitively good idea, one that will only further the feminist movement.Lana Del Rey and the Fault in Our ‘Feminist’ Stars
June 11, 2014
The government of Freeland was now definitively constituted.Freeland
The categories and the indemnities were definitively rejected.Memoirs To Illustrate The History Of My Time
Franois Pierre Guillaume Guizot
At length, their numbers increasing, they definitively adopt her, and set to work.The Insect
Then I hope that at length the Company is definitively formed?The Mysteries of London, v. 1/4
George W. M. Reynolds
So you definitively refuse to accompany me to the Tuileries?The Companions of Jehu
Alexandre Dumas, pre
- serving to decide or settle finally; conclusive
- most reliable, complete, or authoritativethe definitive reading of a text
- serving to define or outline
- zoology fully developed; completethe definitive form of a parasite
- (of postage stamps) permanently on sale
- (as noun)a definitive postage stamp
- grammar a word indicating specificity of reference, such as the definite article or a demonstrative adjective or pronoun
Word Origin and History for definitively
late 14c., from Old French definitif (12c.), from Latin definitivus "explanatory, definitive," from past participle stem of definire (see define). Related: Definitively.