untoppable

English

Etymology

From un- +‎ top +‎ -able.

Adjective

untoppable (comparative more untoppable, superlative most untoppable)

1. Unable to be topped or surpassed; unbeatable.
   • 1989 November 17, Neil Tesser, “Charles Earland”, in Chicago Reader‎^[1]:

     Earland possesses the expansiveness that seems to come with his instrument--a quality that helps make him dangerous, even untoppable in jam sessions--and combines the expected keyboard fireworks with a busy and insistent pulse from the organ's foot-pedal bass register.