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Idioms and Phrases with what is more

what is more

Also, what's more. In addition, furthermore, as in I never got there; what's more, I never really intended to go. [First half of 1800s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.