verifiable

Etymology

It is formed from English verify + -able.^[2][3][4] Verify is from Middle English verifien,^[3][5] from Old French verifier (“to substantiate, find out the truth about”),^[3][2] from Medieval Latin vērificō (“to make true”),^[3][2][5] formed from Latin vērus (“true”) and the combining form of faciō (“to make”).^[3][5] The Latin adjective goes back to Proto-Indo-European *were-o- (“true, trustworthy”), according to Etymonline, which also traces the verb to Proto-Indo-European *dhe- (“to set, put”).^[3]

Earliest recorded meaning

That can be shown to be true, authentic or accurate: 1593, in Gabriel Harvey's Pierces Supererogation.^[2][6] Etymonline likewise dates the adjective to the 1590s,^[3] but Merriam-Webster Unabridged gives 1523 as its first known use.^[7]

Semantic evolution

The word has kept its first sense, "capable of being proved true", since the late 16th century.^[2][4] A philosophical use followed: the derivative verifiability, recorded from the late 19th century, came to mean the capacity of a statement to be checked against empirical experience,^[4] and Merriam-Webster Unabridged records a matching sense of the adjective, open to being proved true or false by reference to observable facts.^[7] The OED records verifiableness and verifiability from 1881 and the adverb verifiably later.^[8]

Timeline

• 1593 – able to be proved true or authentic, in Gabriel Harvey.^[2] Merriam-Webster Unabridged dates the word to 1523.^[7]

Meanings

Adjective

1. Able to be verified, checked or shown to be true or accurate: The witness gave a verifiable account of where she had been.^[9][7][2]
2. (philosophy) Capable in principle of being proved true or false by empirical evidence.^[7][4]

Word family

• verifiability
• verifiably
• verifiableness
• nonverifiable
• unverifiable

Related words

• verify
• very
• verity
• verdict
• aver

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
5. ^ a b c Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
6. ^ Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
7. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
8. ^ Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
9. ^ The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin