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Related to awhile: a while ago
after (a) while, crocodile
An playful way to say goodbye before a temporary parting, often preceded by "See you later, alligator." A: "See you later, alligator." B: "After a while, crocodile."
for a while
For some vague or indeterminate length of time. I could make some good money on that job, and then we wouldn't have to worry about money for a while. I know it's not my dream job, but this place has some good benefits so I'm going to stay here for a while. I've had this haircut for a while now, so I think it's time to change it up.
in a while
Following a certain period of time, usually one that is relatively short. It's a little bit strange driving on the opposite side of the road in Ireland, but you'll get used to it in a while.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
in a while
Also, after a while. After a period of time, usually a moderately short time. For example, Go ahead, I'll be along in a while, or After a while we turned off the television and went for a walk. [c. 1300]
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.