A secret, a mystery; an obscure or mysterious saying. Also in roun: secretly.

A hidden or secret thing; something inexplicable or beyond human comprehension; a person or thing evoking awe or wonder but not well known or…

In widened application. A mystery; something secret or having a secret meaning.

Something that is kept hidden or secret. Something hidden from human understanding or knowledge; a divine or natural mystery.

Something unknown or unrevealed or that is known only by initiation or revelation; a mystery; chiefly plural, the hidden affairs or workings (of…

A puzzling or perplexing thing; a problem; a mystery.

A secret, a mystery. Obsolete. rare.

A hidden thing; a mystery, a profound secret.

figurative. A thing or subject of a mysterious or inscrutable nature.

An obscure or esoteric point or question; something that is abstruse.

Something enigmatic or hidden; a secret, a mystery. Now chiefly: an enigmatic remark, piece of writing, etc.