a dime a dozenvery common and not valuable SYN ten a penny
be a dime a dozento be common and not have much value
[TahlilGaran] Dictionary of Contemporary English ▲
dime a dozen adj. phr.,
informal Easy to get and so of little value; being an everyday thing because there are many of them; common.
Mr. Jones gives A's to only one or two students, but in Mr. Smith's class, A's are a dime a dozen. [TahlilGaran] English Idioms Dictionary ▲