The phrase "doodley-squat" is a slang term used to describe something insignificant or worthless. However, there are several other phrases and words that can be used as synonyms for "doodley-squat." Some common alternatives include "jack," "zilch," "nada," "zip," "nothing," and "zero." These synonyms convey the same meaning as "doodley-squat" by indicating that something is of little value or importance. Using any of these terms is a great way to add variety and color to your vocabulary while expressing the same idea about something being insignificant.