Are you looking for an adjective or a noun? "Exaggerator" is a noun. It is also totally a word, if not a formal one. You can also call someone who exaggerates, a "hyperboliser/hyperbolizer". The "-er" suffix creates nouns which refer to people, from verbs. It is a living suffix, which means you can add it to just about any English verb to create a noun which refers to a person. You won't always find these nouns in dictionaries and sometimes they are rather informal, but they are still valid. eg: "Don't worry about Hawash; he's an exaggerator. He's fine." If you're looking for adjectives to describe people who exaggerate, then you can say they are "melodramatic" or "theatrical". eg. "Hawash is just being melodramatic. He's fine." ----------------------- As an aside, you should say, "looking for" not, "looking about".

You can google synonyms of exaggerate, which will give you many words to use. I just did that myself, and read many words, but few are really close to the exact meaning of "exaggerate". My choice of these synonyms would be "inflate". Billy found himself wishing he hadn't exaggerated his math grade when talking to his mother. Billy found himself wishing he hadn't inflated his math grade when talking to his mother.