Hi
all of a sudden
My dictionary says that sudden is rarely used as a noun, but Mr. Google doesn’t agree.
Dou you use ‘a sudden’? (Or what word to you prefer to use instead)?
.
I don’t have access to Google at the moment, so I’ll have to take a look at those purported nouns later. However, I can’t imagine sudden as a noun outside of that fixed adverbial phrase, all of a sudden.
.
on a sudden 
Yes… You are right, Mister Micawber…
Sorry for my stupidity…
Most of ‘top’ occurrences actually are adverbial
'A sudden '…
Sory again for my hasty question…