"Spacedout" is often used to describe someone who is in a dreamy or disconnected state of mind. There are several synonyms that can be used to convey this meaning, such as "zoned out," "daydreaming," "lost in thought," "distracted," "unfocused," and "absent-minded." "Zoned out" and "daydreaming" both imply a state of being lost in one's own thoughts and not fully present in the moment. "Lost in thought" and "distracted" suggest a lack of focus or attention. "Unfocused" and "absent-minded" denote a general lack of awareness. Whatever synonym you choose, it is important to remember that the word "spacedout" should be used with tact and sensitivity, as it may carry negative connotations.