phantasm

phantasm adj

see phantasm, n.

1. Haunting; [fig.] ever-present; constantly in view; continually surrounding, even in dreams.

phantasm [-s] n

Fr. < L. phantasma < Gk φάνασμα, appearance, phantom, image.

1. Nightmare; haunting dream; trick of the imagination.
2. Illusion; [fig.] vague memory; nearly forgotten concept.