1) Air castle 2) Castle in spain 3) Castle in the air 4) Daydream 5) Daydreaming 6) Dream 7) Dreaming 8) Reverie 9) Revery Found on https://www.crosswordclues.com/clue/oneirism
oneirism 1. A condition marked by a dream prolonged from sleep into a period of waking. 2. A dreamlike hallucination in a waking condition. 3. An abnormal dreamlike state of consciousness. 4. A dreamlike state occurring while someone is awake. Found on http://www.wordinfo.info/words/index/info/view_unit/1476/