final frontier

/ˈfaɪnəl fɹʌnˈtɪə(ɹ)/

noun

Synonym of outer space.

Meanings

nounfinal frontier (uncountable)
  1. informaluncountableSynonym of outer space.

    Back to The Final Frontier

    2012, Neil deGrasse Tyson, “Back to The Final Frontier”, in Discover
    5 more examples

    Mars, Our First Outpost on the Final Frontier

    2013, James Fallows, “Mars, Our First Outpost on the Final Frontier”, in The Atlantic

    With all the troubles here on planet Earth, it’s comforting that things are at least looking up for the Final Frontier.

    2015, Glenn Harlan Reynolds, “Cashing in on the Final Frontier”, in USA Today

    Space, the 'final frontier', is rapidly becoming an extra-terrestrial battleground for corporate espionage and other types of cyber attack as hackers seek to gain commercial advantage from rival networks operating in the $330-billion space economy.

    2015, “The final frontier for HACKERS: Experts reveal hi-tech extra-terrestrial cyberbattles to control surveillance satellites”, in The Daily Mail

    The final frontier: Israel signs agreement with UN space group

    2015, “The final frontier: Israel signs agreement with UN space group"”, in The Times of Israel

    Hedge funds head for the final frontier

    2016, Chris Carter, “Hedge funds head for the final frontier”, in MoneyWeek, archived from the original on 06 Nov 2016

    Synonyms: high frontier, last frontier, outer space

Synonyms & antonyms

nounSynonym of outer space.

Also see

Origin

From the introductory voice-over of Star Trek: The Original Series: "Space, the final frontier..."

Full word history & related roots →
Cite this entry
APA

final frontier. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/final%20frontier

MLA

“final frontier.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/final%20frontier. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “final frontier,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/final%20frontier.

Source: final frontier on Wiktionary, CC BY-SA 4.0.