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general::
Phrase(s): all the more reason for doing something [and] all the more reason to do something
with even better reason or cause for doing something. (Can be included in a number of grammatical constructions.) • Bill: I don’t do well in calculus because I don’t like the stuff. Father: All the more reason for working harder at it. • Bob: I’m tired of painting this fence. It’s so old it’s rotting! Sally: All the more reason to paint it.
McGrawhill's American Idioms And Phrasal Verbs