How do you say it's a beautiful language in spanish?
es un idioma hermoso
Bella (and bellas) and bellos (and bello) mean beautiful. They are different because in Spanish adjectives must agree in gender and number with the noun they are modifying. For example, to say "beautiful mountain," which is a (singular) feminine noun in Spanish, you would say "montaña bella," but to say "beautiful eyes," which is a (plural) masculine noun in Spanish, you would say "ojos bellos."