The term PAST MOULD can be broken down into two crossword solutions: FORMER and FORM. The word FORMER is a 6-letter adjective meaning 'belonging to an earlier time or period'. It is often used to refer to people, places, or things that existed in the PAST but no longer exist. The word FORM is a 4-letter noun meaning 'the shape or structure of something'. It is often used to refer to the physical shape of an object or the way something is arranged. Together, these two words can be used to describe something that has been around for a long time and has taken on a particular shape or FORM.