The word "unmatched" means there is nothing else that can be compared or is equal to it. It describes something that is unique, exceptional, or unparalleled. Full definition
We provide our clients with a unique set of creative service offerings unmatched by the competition. (productions-plus.com)
Last month, it opened an innovative research center that will offer unmatched levels of freedom and support to a select group of researchers at the very beginning of their careers. (sciencemag.org)