dream up

dream up idiom
Invent, concoct, as in Count on her to dream up some explanation for her absence. This expression replaced the somewhat earlier dream out. [c. 1940]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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