(transitive) To render obscure; to darken; to make dim; to keep in the dark; to hide; to make less visible, intelligible, legible, glorious, beautiful, or illustrious.

(transitive) To hide, put out of sight etc.

(intransitive, obsolete) To conceal oneself; to hide.

Dark, faint or indistinct.

Hidden, out of sight or inconspicuous.

Difficult to understand.

Not well-known.

Unknown or uncertain; unclear.