modality

Etymology

The OED takes it partly as borrowed from Medieval Latin modālitās, recorded from the 13th century, and partly as formed from English modal + -ity.^[2] Merriam-Webster Unabridged and Etymonline also name French modalité as a source,^[3][4][5] while the Shorter Oxford, the Oxford Dictionary of English and Klein derive it from the Medieval Latin word alone.^[6][7][8] The Latin noun is formed from modālis (“of or relating to a mode”),^[4][7][8] from Latin modus (“measure; manner, way”),^[4] which Etymonline traces to Proto-Indo-European *med- (“to take appropriate measures”).^[4] The OED notes that the French word appears in logic in the early 17th century, in music in 1840, in law in 1893 and in linguistics in the late 19th century, and that the political and diplomatic sense was probably modelled on German Modalität.^[2]

Earliest recorded meaning

The non-essential aspect of a thing, its mode or manner of being as distinct from its substance: 1545, in Bale's Mysterye of Inyquyte.^[2][9] Merriam-Webster Unabridged also dates the word to 1545,^[3] while Etymonline gives the 1610s^[4] and the Shorter Oxford the early 17th century.^[6]

Semantic evolution

The word began in scholastic philosophy, for the mode or manner of a thing as opposed to its substance.^[2][9] In logic it meant from 1628 the property by which a proposition is possible, impossible, necessary or contingent,^[2][3] and since 1836, following Kant, the classification of a judgement as problematic, assertoric or apodictic.^[2][9] Johnson (1755) defined it simply as "accidental difference; modal accident".^[10] The modern specialised senses followed the uses of modal in each field: law (1890), psychology, where it means one of the senses such as sight or hearing (1895), music (1906) and grammar (1907).^[2] In medicine it meant from 1911 a factor that helps diagnosis and since 1932 a particular method of treatment, such as radiotherapy.^[2][9] From 1912 it was used in politics and diplomacy for an arrangement or procedure, a means of reaching an end.^[9][2]

Timeline

• 1545 – the mode or manner of a thing, as distinct from its substance.^[2][3]
• 1628 – in logic, the quality of a proposition as possible, necessary and so on.^[2][9]
• 1656 – a question of manner rather than substance (obsolete after 1715).^[2][9]
• 1836 – in Kantian logic, the classification of a judgement.^[2][9]
• 1895 – in psychology, a sense such as sight or hearing.^[2][9]
• 1906 – in music, the quality of being modal.^[2]
• 1907 – in grammar, the quality of being modal.^[2]
• 1912 – in politics and diplomacy, an arrangement or procedure.^[9]
• 1932 – in medicine, a method of treatment.^[2][9]

Meanings

Noun

1. The quality or condition of being modal; a modal quality or attribute: the modality of her harmonies.^[3][11]
2. (logic) The classification of a proposition according to whether it asserts or denies its possibility, necessity or contingency.^[3][11][2]
3. (grammar) The quality of a verb or sentence of being modal.^[2]
4. (psychology) One of the main kinds of sensation, such as sight or hearing.^[3][11][2]
5. (medicine) A method of therapy, especially one using a physical agent: Radiotherapy and surgery are often combined as treatment modalities.^[3][11][2]
6. An arrangement or procedure for doing something, especially in politics or diplomacy: the modalities of the ceasefire.^[2][9]

Word family

• multimodality

Related words

• modal
• mode
• mood
• modulate

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 n o p q r s t u v Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f g h Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
4. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
5. ^ Gove, Philip Babcock, ed. (1961), Webster's Third New International Dictionary of the English Language, Unabridged, Springfield, Mass.: G. & C. Merriam
6. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
7. ^ a b Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
8. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
9. ^ a b c d e f g h i j k l Kay, Christian; Roberts, Jane; Samuels, Michael; Wotherspoon, Irené, eds. (2009), Historical Thesaurus of the Oxford English Dictionary, Oxford: Oxford University Press; online edition (2024)
10. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
11. ^ a b c d Collins English Dictionary (2023), Glasgow: HarperCollins