muddy

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

Related words

• mud
• muddle

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