adj. 1. Mildly warm; tepid. 2. Lacking conviction or enthusiasm; indifferent: gave only lukewarm support to the incumbent candidate. [Middle English leukwarm : leuk, luke (possibly alteration of leu, from Old English hlēow; see kelə-1 in the Appendix of Indo-European roots) + warm, warm; see WARM.] lukewarmly adv. |
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