1. nothingburger - Noun
2. nothingburger - Adjective
(informal) A person who is a nonentity.
(informal) Something of less importance than its treatment suggests.
(informal) A person or object that is bland or unremarkable in appearance or impact.
(informal) bland or unremarkable in appearance
(informal) disreputable, as of a person
Source: en.wiktionary.org