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Idioms and Phrases with get through one's head

get through one's head

Understand, believe, or be convinced. For example, Bill cannot get it through his head that John is moving out.

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