1. [adj]  resembling a dream; "night invested the lake with a dreamlike quality"; "as irrational and surreal as a dream"
2. [adj]  characterized by fantastic imagery and incongruous juxtapositions; "a great concourse of phantasmagoric shadows"--J.C.Powys; "the incongruous imagery in surreal art and literature"

SURREAL is a 7 letter word that starts with S.