Lacking conviction or enthusiasm; indifferent: gave only lukewarm support to the incumbent candidate. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "lukewarm" in a sentence
"Just dip in lukewarm water and bring to the wall each sequentially numbered panel."
"ONE thing that CAN be a problem … long ago they used more silicon-release agent on the molds, so the model needs a wash in lukewarm water and mild dish-soap prior to painting to ensure good paint adhesion."
"Soda, etc, that comes home lukewarm from the grocery store stays in the cold garage overnight rather than going into the fridge."