What is the abstract noun for thief?

The Word 'steal' is an abstractnoun as an informal Word for an extreme bargain, something acquired at a cost far below its real value.

The Word 'steal' is a concrete noun as a Word for a type of action in Baseball.

The abstract noun form of the verb to steal is the gerund, stealing, as a Word for avoiding detection by moving carefully.

A related abstract noun form is stealth.