a person who appears to be in his or her own world or out of touch with reality.
a person who behaves oddly or seems stupefied or remote because of the influence of drugs; druggie.
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Is English Leaving Space?
Earlier this week, NASA announced that it is looking for new astronauts. Though NASA has sent its last shuttle into space, it will continue to send astronauts to the International Space Station through a collaboration with the Russian Federal Space Agency. NASA has promised to help staff the International Space Station (ISS) through at least 2020. So the ISS will continue to host astronauts from around …
junkie, addict, user, absent, absorbed, abstracted, careless, distracted, dreaming, dreamy, engrossed, faraway, forgetful, heedless, inattentive, lost, oblivious, preoccupied, remote, removed
Origin of space cadet
1950–55, for sense “spaceman trainee”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
slang a person who is eccentric or out of touch with reality, as if affected by drugs
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012