unclimbable

U1N1C3L1I1M3B3A1B3L1E1

adjective

Not able to be climbed

“Those cliffs are unclimbable.”

Similar
unscalableunsurmountableimpassableunpassable
Opposite
climbable
OriginEnglish climb ← Middle English un- ← Old English un- →
Scrabble 19
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Meanings

adjectiveunclimbable (not comparable)
  1. not comparableNot able to be climbed

    Those cliffs are unclimbable.

    2 more examples

    The base of each [floodlight] tower forms an outdoor-type sub-station compound with a 7ft unclimbable fence which houses the extra high-voltage ring main switchgear, the transformer and the medium voltage switchgear.

    1963 August, “The semi-automatic Tees Yard of the North Eastern Region”, in Modern Railways, pages 123–124

    Yet every world should have at least one unclimbable mountain.

    1970, Larry Niven, Ringworld, page 118

Synonyms & antonyms

Opposite
climbable

adjectiveincapable of being ascended

Similar
unscalable

adjectiveincapable of being surmounted or climbed

Similar
unsurmountableimpassableunpassable
Also see
impassableunpassableunscalableunsurmountable

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Germanic*un-
  4. Proto-West Germanic*un-
  5. Old Englishun-
  6. Middle Englishun-
  7. Englishun-
  8. Englishclimb
  9. Englishunclimbable

From un- + climb + -able.

Full word history & related roots →
Cite this entry
APA

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

MLA

“unclimbable.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/unclimbable. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “unclimbable,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/unclimbable.

Source: unclimbable on Wiktionary, CC BY-SA 4.0.