greatest thing since sliced bread

Idioms & Phrases

greatest thing since sliced bread

Also, best thing since sliced bread. An excellent new invention, as in Harry swears that this new program is the greatest thing since sliced bread. This phrase, used either straightforwardly or sarcastically, alludes to the convenience of buying bread that is already sliced. [Mid-1900s]

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