UNIQUE WORDS game to increase our vocabulary - alphabetical order

Omniscience- The capacity to know everything.

Quid - a slang expression for the British pound sterling, or the British pound (GBP), the currency of the United Kingdom (U.K.)

Serendipity - the occurrence and development of events by chance in a happy or beneficial way.

a fortunate stroke of serendipity

Undulate - move or go with a smooth up-and-down motion  

Washer - a small flat ring made of metal, rubber, or plastic fixed under a nut or the head of a bolt to spread the pressure when tightened or between two joining surfaces as a spacer or seal

Yak: a large, stocky, shaggy-haired wild ox of the Tibetan highlands, having long, curved horns; endangered

Apropos - with reference to; concerning.