The crossword solution for the term PRO ___ (PERFUNCTORILY) is FORMA, which is a five-letter word. Forma is a Latin word meaning 'in form' or 'in accordance with a prescribed form'. It is often used to describe an action that is done in a routine or mechanical manner without any real enthusiasm or interest. In this context, it can be used to describe someone who performs a task perfunctorily, or without any real effort or enthusiasm.