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definitive

[dih-fin-i-tiv] /dɪˈfɪn ɪ tɪv/
adjective
1.
most reliable or complete, as of a text, author, criticism, study, or the like:
the definitive biography of Andrew Jackson.
2.
serving to define, fix, or specify definitely:
to clarify with a definitive statement.
3.
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.
4.
Biology. fully developed or formed; complete.
noun
5.
a defining or limiting word, as an article, a demonstrative, or the like.
6.
Philately. a stamp that is a regular issue and is usually on sale for an extended period of time.
Compare commemorative (def 2).
Origin
1350-1400
1350-1400; Middle English < Old French < Latin dēfīnītīvus, equivalent to dēfīnīt(us) (see definite) + -īvus -ive
Related forms
definitively, adverb
definitiveness, noun
nondefinitive, adjective
nondefinitively, adverb
nondefinitiveness, noun
undefinitive, adjective
undefinitively, adverb
undefinitiveness, noun
Can be confused
definite, definitive.
Synonyms
3. complete, absolute, ultimate, supreme.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for undefinitive

definitive

/dɪˈfɪnɪtɪv/
adjective
1.
serving to decide or settle finally; conclusive
2.
most reliable, complete, or authoritative: the definitive reading of a text
3.
serving to define or outline
4.
(zoology) fully developed; complete: the definitive form of a parasite
5.
  1. (of postage stamps) permanently on sale
  2. (as noun) a definitive postage stamp
noun
6.
(grammar) a word indicating specificity of reference, such as the definite article or a demonstrative adjective or pronoun
Derived Forms
definitively, adverb
definitiveness, 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
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Word Origin and History for undefinitive

definitive

adj.

late 14c., from Old French definitif (12c.), from Latin definitivus "explanatory, definitive," from past participle stem of definire (see define). Related: Definitively.

Online Etymology Dictionary, © 2010 Douglas Harper
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