dime a dozen

Idioms & Phrases

dime a dozen

So plentiful as to be valueless. For example, Don't bother to buy one of thesethey're a dime a dozen. The dime was declared the American ten-cent coin in 1786 by the Continental Congress. [First half of 1900s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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