mountainous

/หˆmaสŠntษชnษ™s/

IPA: /M AW1 N T AH0 N AH0 S/

adjective
  1. 1

    Having many mountains; characterized by mountains; of the nature of a mountain; rough (terrain); rocky.

  2. 2

    Resembling a mountain, especially in size; huge; towering.

  3. 3

    (of a problem or task) Very difficult.

  4. 4

    Inhabiting mountains; hence, barbarous.

Source: https://en.wiktionary.org/wiki/mountainous