In case you missed this Word of the Day

Conveniently brought to you by the Oxford English Dictionary blog feed. Thank you O.E.D.!

mysterious

Full of or fraught with mystery; shrouded in mystery; hidden from human knowledge or understanding; difficult or impossible to explain, solve, or discover; of obscure origin, nature, or purpose.

Of speech, language, etc.: hard to comprehend, obscure, abstruse.

Of a person or group of people: whose identity, movements, character, or motives are secret or unknown; enigmatic, elusive, secretive; cultivating or delighting in mystery.