adjective

mountainous

mountainous

They live in a mountainous region.

They live in a mountainous region.

The terrain is very mountainous.

The terrain is very mountainous.

mountainous ((noun)) having many mountains Switzerland is a mountainous country.

Synonyms: hilly, rugged, alpine; Antonyms: flat, level

From 'mountain' + '-ous' (a suffix meaning 'full of' or 'characterized by').

The suffix '-ous' often means 'full of'. So, 'mountainous' literally means 'full of mountains'.

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