Etymologically
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muddy

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Pronunciation

Etymology

It is formed from English mud + -y.[2][3][4][5] In Middle English it was muddi, also moddy,[6][4] and the OED compares Middle Low German moddich, also muddich, "muddy, mouldy".[2] The noun mud, recorded from the late 14th century, is cognate with and probably borrowed from Middle Low German mudde and Middle Dutch modde (“thick mud”).[3]

Earliest recorded meaning

Full of mud, covered with mud: about 1450 in John Walton's translation of Boethius, where fools sink their hearts "into þis muddy grounde".[2][6] Etymonline finds it in place names from the late 13th century,[3] and the OED notes earlier place names such as Mudiford (1086, now Mudford in Somerset).[2]

Semantic evolution

From mud the word was soon extended to things that are not clear: a liquid that is thick or cloudy (1590), a colour or light that is dull and dirty-looking (1600), and a face that is gloomy or sullen (1592).[2][3] In Shakespeare's day it also meant "sinful, morally impure",[2] and a mind that is confused (about 1571) or writing that is obscure (1611).[2] Johnson (1755) gave "turbid; foul with mud" first, with quotations from Shakespeare.[7] The verb was formed from the adjective at the beginning of the 17th century,[2][3] replacing the older verb mud (1590s);[3] Shakespeare's Hamlet (1604) has it in the figurative sense "to confuse".[2][4] To muddy the waters, to make a matter confusing, is recorded in figurative use from 1653.[2] In 1776 Johnson was quoted using muddy for "half drunk", a sense the OED records until 1843[2] and that the English Dialect Dictionary still found in Scotland, Yorkshire and Northamptonshire.[8] The Big Muddy has been a nickname of the Missouri or the Mississippi since 1825,[3] and in Australian slang muddy was a euphemism for bloody (1905).[9] Of sounds it has been used since the 1960s.[3]

Timeline

  • c. 1450 – covered with or full of mud.[2][6]
  • c. 1571 – confused in mind.[2]
  • 1590 – of a liquid, thick and cloudy.[2]
  • 1592 – of a look, gloomy, sullen.[2]
  • 1600 – of a colour, dull; also sinful, morally impure.[2]
  • 1604 – verb, to confuse, in Hamlet.[2][4]
  • 1611 – of writing or speech, obscure.[2]
  • 1653 – to muddy the water.[2]
  • 1776–1843 – partly drunk.[2]
  • 1825 – Big Muddy, the Missouri or Mississippi.[3]
  • 1893 – verb, to splash with mud.[2]

Meanings

Adjective

  1. Covered with, full of or spattered with mud: muddy boots.[10][4][2]
  2. Of a liquid, cloudy or thick with sediment; turbid.[10][2]
  3. Of a colour, light or sound, dull and not clear.[10][4][2]
  4. Of thought or expression, confused, vague or obscure: a muddy argument.[10][2]
  5. Resembling mud, as in colour or taste.[4][2]
  6. Morally impure or of doubtful honesty.[4][2]
  7. (obsolete, 1776–1843) Partly drunk.[2][8]

Verb

  1. To make dirty with mud.[10][4][2]
  2. To make a liquid cloudy or a colour dull.[4][2]
  3. To make confused or obscure.[2][4] Muddy the waters: to complicate an issue so that it is harder to understand.[2][5]

Word family

  • muddily
  • muddiness
  • unmuddy

References

  1. ^ 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 w x y z 27 28 29 30 31 32 Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  3. ^ a b c d e f g h i Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b c d e f g h i j k Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  5. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  6. ^ 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)
  7. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
  8. ^ a b Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)
  9. ^ Green, Jonathon (2010), Green's Dictionary of Slang, London: Chambers; digital ed. 2016–, https://greensdictofslang.com
  10. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins