IPA: /haɪˈpɜːbəlɪkəl/
KK: /haɪˈpɜr bɒl ɪ kəl/
Relating to or characterized by hyperbole, which is an exaggerated statement not meant to be taken literally.
His hyperbolical claims about the product made it hard to believe any of his statements.
Hyperbolical → It is formed from "hyper-" (meaning over or beyond) and "ballein" (from Greek, meaning to throw). The word describes something that throws beyond the normal limits, often used to refer to exaggerated statements or claims.
Think of something that 'throws beyond' ('hyper-') the usual limits — that's why hyperbolical refers to exaggerated or overstated claims.