American Heritage® Dictionary of the English Language, Fifth Edition. Spaced-out definition: Someone who is spaced-out feels as if nothing around them is real , usually because they... | Meaning, pronunciation, translations and examples Daydreaming is the most common kind of spacing out and is generally nothing to worry about. Actually, you can find the definition of "space out" in a dictionary, e.g., Macmillan defines it like this: "to arrange objects, events, activities, etc. space [spās] 1. a delimited area. Ever spaced out over a long, difficult book and realize you haven’t read a single word in 10 minutes? 3. the areas of the universe beyond the earth and its atmosphere. I meant to buy batteries when I went to the store, but I spaced it out. 2. an actual or potential cavity of the body. Distracted, inattentive, dazed, etc. Your user interface is telling me (falsely) that this example doesn't contain "space out." Generally, 'spacing out' means that you are not in the moment, that your mind is somewhere else. What does spaced-out mean? See more. Spaced-out definition, dazed or stupefied because of the influence of narcotic drugs. Another word for spaced-out. *** Dear UD staff, You need to fix your software. so that they are a particular time or distance apart". Define spaced. If you need a programmer who's up to the task, drop me an e-mail and I'll send my resume. Find more ways to say spaced out, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. adj. (adjective) But there are more serious kinds of spacing out that can be caused by a medical condition. Daydream about nothing in particular. Find more ways to say spaced-out, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. adj., adj spa´tial. Slang Spaced-out. Synonyms for spaced out include spacey, out to lunch, in a fog, zoned out, confused, dazed, bewildered, befuddled, dizzy and dopey. Another word for spaced out. Find more similar words at wordhippo.com! spaced synonyms, spaced pronunciation, spaced translation, English dictionary definition of spaced. This use is a bit like a pun because as it suggests you would use spaces to space it out.