LUKEWARM

adj. 1 tepid, room temperature, warm I like my bath-water lukewarm 2 cool, indifferent, half-hearted, chill, chilly, phlegmatic, unresponsive, unenthusiastic, nonchalant, lackadaisical, apathetic, insouciant, Laodicean, unmoved, US half-baked, Colloq laid-back My ideas for improving efficiency continued to receive a lukewarm reception from the board