monólogo, monologue.

monopolizar, to monopolize.

monótono, monotonous.

monstruo, monster.

Montaña (la), prop. noun (= a mountainous country of northern Spain, that lies on the Bay of Biscay).

montar (en), to mount.

montaraz, wild, rough.

monte, m., mountain, forest.

montón, m., pile, heap.

montoncillo (dim.), small pile.