10 Most Difficult Languages to Learn

8. Greek

Score: 2.16

Next on our list is Greek, which is one of the oldest known languages in the world and had a significant influence on the development of English. What makes Greek a difficult language to learn is that users need to have familiarity with Greek alphabets. Moreover, it has complex grammar rules, such as having three noun genders and multiple cases and tenses.

There are 1.70 million learners of Greek on Duolingo, Inc. (NASDAQ:DUOL). Multiple courses of the language are available on Coursera, Inc. (NYSE:COUR) as well.