Can you say a pickpocketer instead of pickpocket in informal English?

While "pickpocketer" is technically a correct word, it's not commonly used in informal English. People usually just say "pickpocket" regardless of the context.

Here are some informal alternatives you could use:

* Thief

* Scrounger (implies someone who steals petty things)

* Snitch

* Cutpurse (a somewhat archaic term)

Remember, the best choice depends on the specific situation and the tone you want to convey.