RichThesaurus
hell-for-leather
vs
like a blue-arsed fly
hell-for-leather
adv
As fast as possible; recklessly fast.
like a blue-arsed fly
adj
To be frantic, harried or restless
How often have the words
hell-for-leather
and
like a blue-arsed fly
occurred in a corpus of books?
(source:
Google Ngram Viewer
)