extraordinary; singular; incredible
Emphasizes that something is so unusual or remarkable that it has no equal. Often used in a positive or admiring tone, but can also describe bizarre or outlandish things.
His talent is extraordinary.
This dish has an incredible flavor.
Compound of 珍 (rare, curious) and 無類 (matchless, peerless). The exact historical derivation is uncertain, but the word is conventionally associated with the meaning 'so rare it has no equal'.