It also depends on the number of languages you already know and use, and way more important, if you are forced to use it or not. If you are native Finnish spea

It also depends on the number of languages you already know and use, and way more important, if you are forced to use it or not. If you are native Finnish speaker left alone in a village where the only practiced language is Arabic, you are going to speak Arabic pretty fast! If you speak 20 different languages and as soon as you try to speak Danish the person in front of you answers in English, you will have hard time learning it.