ruthless

Etymology

It is from Middle English reuthe (“pity, compassion”) + -les,^[2][3][4][5] recorded as reutheles and rewtheles,^[2][3][6] that is, ruth and -less.^[5][7][8] That noun was formed from the verb rue with the suffix -th,^[5][3][4] perhaps after Old Norse hryggð;^[5][9] the verb comes from Old English hrēowan (“to make sorry, distress”).^[2]

Earliest recorded meaning

Feeling or showing no pity or compassion; merciless: about 1330.^[5][3][2]

Semantic evolution

The adjective has kept its first sense.^[5][7] Chaucer used it in the forms routheles and routhelees.^[10] Johnson (1755) defined it as cruel, pitiless and barbarous, with examples from Shakespeare.^[11] In 1907 a weaker sense appears, of actions or methods: determined, with no regard for what must be sacrificed.^[5] The noun ruth became archaic, and Hoad notes that it survives in general use only in ruthless.^[12] The opposite ruthful, from about 1200, fell out of use after the late 17th century except as a deliberate archaism, perhaps because it meant both "pitiable" and "compassionate".^[2] The nouns ruthness, compassion, and unruth, lack of pity, died out even earlier.^[2]

Timeline

• c. 1330 – pitiless, merciless.^[5][3]
• 1755 – Johnson: cruel, pitiless, barbarous.^[11]
• 1907 – of an action or method, uncompromising, determined.^[5]

Meanings

Adjective

1. Showing no pity or mercy; cruel and hard-hearted: a ruthless tyrant.^[13][6][5]
2. Of an action or method, determined and uncompromising, with no regard for the cost: a ruthless pruning of the budget.^[5][6]

Word family

• ruthlessly
• ruthlessness

Related words

• ruth
• rue

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
3. ^ a b c d e Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
4. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
5. ^ a b c d e f g h i j k Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
6. ^ a b c Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
7. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
8. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
9. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
10. ^ Skeat, W. W., ed. (1894), The Complete Works of Geoffrey Chaucer, vol. VI: Glossarial Index, Oxford: Clarendon Press
11. ^ a b Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
12. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
13. ^ Collins English Dictionary (2023), Glasgow: HarperCollins