Yes, for example:
The road ahead seemed to be very mountainous.
Switzerland is noted for its mountainous terrain.
The area around the little village was very mountainous.
The area of my fathers origin was very mountainous
The terrain was mountainous.
I put the word wool in a ten word sentence.
see How do you put the word countries in a sentence?
The word is put in a sentence like I just did right now.
you have just put it in a sentence....
yes you can put in a sentence
How do you put dissent in a sentence How do you put dissent in a sentence
I can put the word opaque into a sentence. Alternatively, The wall is opaque.
The word for mountainous in Spanish is: montañoso.