Synonyms and related words :
Walter Mitty, absence of mind, absentmindedness, absorption, abstractedness, abstraction, bad dream, bemusement, castle-building, close study, concentration, contemplativeness, daydream, daydreamer, daydreaming, deep thought, depth of thought, dream, dreaming, engrossment, fantasy, fantasying, fit of abstraction, incubus, melancholy, mooning, moonraking, muse, musefulness, musing, muted ecstasy, nightmare, pensiveness, pipe dream, pipe-dreaming, preoccupation, profound thought, reflectiveness, reverie, speculativeness, stargazing, study, thoughtfulness, trance, vision, wistfulness, woolgathering,