Unattainable
/ˌʌn.əˈteɪ.nə.bəl/
Synonyms
- impossible
- inaccessible
- out of reach
- unachievable
- unreachable
Slang Meanings
Pipe dream
Thinking you can become a rock star overnight is just a pipe dream.
Moonshot
His idea of traveling to Mars is a total moonshot.