Cliché: dirt cheap

Meaning: as inexpensive as plain old dirt (definition)


Rewrite 1: cheap as muck
Rewrite 2: dandelion cheap
Rewrite 3: crab-grass cheap
Rewrite 4: five-and-dime cheap
Rewrite 5: second-hand store cheap
Rewrite 6: greasy-spoon cheap


Comments: It's hard to be cheaper than ordinary dirt, so in that sense the original idiom is probably the most demonstrable of the point. However, there is lots of territory to explore on inexpensive or of less value. There is, of course, the potential to go too far.


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