twixter
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twixt·er
(twĭk′stər)n.
A young adult, usually between 20 and 30 years old, who lives with his or her parents because of not being able to afford or being unwilling to live independently.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.