space cadet

noun

Slang.

1. a person who appears to be in their own world or out of touch with reality.

2. a person who behaves oddly or seems stupefied or remote because of the influence of drugs; druggie.

space cadet

noun

1. slang,  a person who is eccentric or out of touch with reality, as if affected by drugs

Word History and Origins

Origin of space cadet¹

1950–55, for sense “spaceman trainee”

Related Words

• addict 
• drug user www.thesaurus.com
• substance abuser www.thesaurus.com
• user