Rugrat is a slang word that often refers to a child or a young toddler. However, there are plenty of other synonyms that one can use instead of using rugrat. Some of them include munchkin, tot, kiddo, ankle biter, tyke, tiny one, little tike, wee one, and little angel. These words can be chosen depending on the age group of the child and the tone in which the word is intended to be used. It is always important to choose words that are appropriate and respectful when referring to children, and these synonyms provide a great variety to choose from.