definitive

Etymology

It is inherited from Middle English diffinitif, borrowed from Old French definitif (also diffinitif),^[2][3][4] Latin dēfīnītīvus (“explanatory, definitive”), formed on dēfīnītus, the past participle of dēfīniō (“to limit, determine, explain”),^[2][5][6] the verb behind define.^[7][6] That verb is formed from dē- (“completely”) and fīniō (“to bound, limit”), from fīnis (“boundary, end”).^[5] Etymonline notes that in Late Latin the adjective also meant “definite”.^[5]

Earliest recorded meaning

Settling a matter finally, conclusive: about 1386, in Chaucer's Physician's Tale, where the judge cannot yet give a “diffynytif sentence”.^[2][3] Etymonline dates the word to the late 14th century.^[5]

Semantic evolution

For a long time the word stayed close to the law and to formal decisions, and between 1595 and 1804 a definitive was itself a final judgement or sentence.^[2][4] From 1624, in Henry Wotton's Elements of Architecture, it also meant final and fixed as a finished product, and it came to be used of an edition or study regarded as the most complete and authoritative.^[2][8] In grammar it named words that define or limit, such as the definite article (adjective 1731, noun 1751).^[2][5] Johnson (1755) glossed it as determinate, positive, express.^[9] Stamp collectors have used it since 1929 for stamps of a country's standard issue, which stay on sale.^[2][8] In zoology it describes the fully developed form of an organism,^[8] and in biology a definitive host is the one in which a parasite matures.^[10]

Timeline

• c. 1386 – conclusive, final.^[2][3]
• 1595 – noun: a final judgement (obsolete by 1804).^[2][4]
• 1624 – fixed and final as a finished product.^[2]
• 1731 – in grammar: defining or limiting.^[2]
• 1751 – noun: a defining word.^[2][5]
• 1929 – of postage stamps: of the standard issue.^[2]

Modern meaning

Adjective

1. Settling something finally; conclusive: The test gave a definitive result.
2. Regarded as the most complete and authoritative of its kind: the definitive biography of the composer.
3. Serving to define or outline.
4. (zoology) Fully developed.
5. Of a postage stamp: belonging to the standard issue of a country.

Noun

1. A definitive postage stamp.
2. (grammar) A word that specifies reference, such as the definite article or a demonstrative.

Word family

• definitively
• definitiveness
• nondefinitive
• undefinitive
• definitive host

Related words

• definite
• define
• final
• finish

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c Kurath, Hans; Kuhn, Sherman M.; Lewis, Robert E., eds. (1952–2001), Middle English Dictionary, Ann Arbor: University of Michigan Press; online edition ed. Frances McSparran et al. (2000–2018)
4. ^ a b c Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
5. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
6. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
7. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
8. ^ a b c Collins English Dictionary (2023), Glasgow: HarperCollins
9. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
10. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press