adjective. radically distinctive and without equal.
1. Adjective Slate is also unequalled in its natural beauty, a beauty seemingly immune to the effects of time and the elements. 2. Verb, past tense As such, it attracts a stellar line-up of international talent unequalled for a venue of its size. 3. Verb, past participle Startlingly close to Nazca, Peru's immense Cerro Blanco dune beckons pilots with a heap of flyable sand unequalled anywhere in the world.