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To become longer in length through the act of growing. Ugh, when will my bangs grow out? They're so short now that it looks ridiculous.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
[for something that has been cut back] to regrow. Don't worry, your hair will grow out again. Will the grass grow out again, do you think?
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
1. To extend from a place by growing: I cut my hair short, but it will grow out again.
2. To cause something to become longer or thicker by growing it or letting it grow: I cut my hair short, but I'll grow it out again. He grew out his beard until his chin was completely covered.
3. grow out of To have developed to the point that one is too big or no longer suited to something: My son grew out of his shoes in three weeks.
4. grow out of To have developed in such a way that something is no longer interesting or appropriate: When I was young I liked eating bananas with pickles, but I grew out of it.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.