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general::
Phrase(s): not all something is cracked up to be [and] not what something is cracked up to be
Fig. not as good as something is said to be. (Not always in the negative.) • This isn’t a very good pen. It’s not all it’s cracked up to be. • Is this one all it’s cracked up to be?
McGrawhill's American Idioms And Phrasal Verbs