dysfunction

Etymology

It is formed from English dys- + function,^[2][3][4][5] and Merriam-Webster also allows dis- as the prefix, with the less common spelling “disfunction”.^[6][3] The prefix comes from Ancient Greek δυσ- (dus-, “bad, ill, hard”),^[4][7] from Proto-Indo-European *dus- (“bad, ill”),^[4] and is related to Old English tō-, Old High German zur- and Old Norse tor-.^[7][4] The base comes from French fonction and directly from Latin fūnctiō (“a performance, execution”), from fungor (“to perform, discharge”).^[4][7]

Earliest recorded meaning

Abnormal or impaired function, at first in anatomy and medicine: 1914, according to Etymonline;^[4] the OED's first record is from 1916, in the third edition of Gould's Practitioner's Medical Dictionary,^[2] and Merriam-Webster also dates it to about 1916.^[6] Dictionary.com gives 1915–20.^[5]

Semantic evolution

The word was used in sociology by 1949,^[4] for a trait or condition that fails to serve a useful purpose in society.^[6] It later came to be used of relationships and especially families that fail to behave in ways accepted as normal or healthy.^[8][9] The adjective dysfunctional is dated 1915 by Etymonline and 1936 by the OED.^[4][2]

Timeline

• 1914 – failure to function properly.^[4]
• 1916 – impairment of function, in a medical dictionary.^[2][6]
• 1936 – the adjective dysfunctional, in the OED.^[2]
• 1949 – in sociology.^[4]

Meanings

Noun

1. (medicine) Abnormal or impaired working of an organ or bodily system: thyroid dysfunction.^[8][9][6][2]
2. Failure of a relationship or group, especially a family, to behave in ways accepted as normal or healthy.^[8][9]
3. (sociology) A trait or condition that does not serve a useful purpose in society.^[6]

Word family

• dysfunctional
• minimal brain dysfunction

Related words

• function
• malfunction

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
4. ^ a b c d e f g h i j Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
5. ^ a b Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
6. ^ a b c d e f Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
7. ^ a b c Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
8. ^ a b c Collins English Dictionary (2023), Glasgow: HarperCollins
9. ^ a b c The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt