- Formation
- Inherited
- Inherited from
- Middle English lukewarme
Pronunciation
- IPA: /ˌluːkˈwɔːm/ (UK); /ˌlukˈwɔɹm/ (US)[1]
Etymology
It is inherited from Middle English lukewarme,[2] a compound of warm and Middle English luke “tepid”,[3][4][5][6] a word of uncertain origin.[6][5] It may be a variant of lew “tepid”, from Old English hlēow,[3][5][2] and Merriam-Webster relates it to Old High German lāo “lukewarm”.[4]
Earliest recorded meaning
Moderately warm, tepid (late 14th century; 1373 in Barnhart).[5][6][7]
Semantic evolution
The figurative sense, of people and their actions lacking zeal or enthusiasm, is recorded from the 1520s.[6][7] English once used lukewarm as a noun for an unenthusiastic person (1693) and as a verb (1592).[7]
Timeline
- 1373 – luke warm, tepid.[5]
- about 1522 – lacking zeal or enthusiasm.[7][6]
- 1592 – verb, to make lukewarm.[7]
- 1693 – noun, an unenthusiastic person.[7]
Modern meaning
Adjective
- Mildly warm; tepid.
- Lacking conviction or enthusiasm; half-hearted.
Word family
- lukewarmly
- lukewarmness
Related words
- lee
- tepid
Usage notes
Random House lists half-hearted, cool and apathetic as synonyms of the figurative sense.[2]
References
- ^ Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c Random House Webster's Unabridged Dictionary (1999), 2nd ed., New York: Random House
- ^ a b The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
- ^ a b Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
- ^ a b c d e Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
- ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ a b c d e f Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
Cite this entry
“Lukewarm.” Etymologically, 15 Oct. 2026, etymologically.com/en/lukewarm. Accessed 15 Oct. 2026.
Last edited on . ·