The term 'PIE IN THE SKY' is used to describe an unrealistic or unattainable goal. The crossword solutions for this term are UTOPIAN (7 letters), UFO (3 letters), PIPEDREAM (9 letters), FLYINGSAUCER (12 letters), ANIDLEPROMISE (13 letters), and WISHFULTHINKING (15 letters). All of these words refer to something that is not achievable, often due to its impracticality or impossibility. UTOPIAN refers to an idealistic society, UFO to an unidentified flying object, pipedream to a fanciful dream, flyingsaucer to a type of UFO, anidlepromise to a promise that will never be fulfilled, and wishfulthinking to the act of hoping for something that is unlikely to happen.