unequalled for learners of EnglishPowered by COBUILD (ʌniːkwəld)
regional note: in AM, use unequaled
If you describe something as unequalled, you mean that it is greater, better, or more extreme than anything else of the same kind. ⇒ This record figure was unequalled for 13 years. ⇒ ...an unequalled level of service. ⇒ ...a feat unequaled in the history of polar exploration.