[Dimensio]

"This is the sort of pedantry up with which I will not put."

Just because I'm incredibly pedantic...

In the context of "I will not put up with your attitude", "up" is an adverb as it modifies the verb "put". It is perfectly acceptable to end a sentence with an adverb. As such, Churchill's attempt at ridicule would have been gramattically correct when phrased with the common usage.

[medved]

fyi