on tiptoe
Eagerly anticipating something, as in The children were on tiptoe before the birthday party. [Late 1500s]
Words Nearby on tiptoe
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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