According to Ethnologue, there are more than 7,000 languages in the world, with some being more difficult to learn than others. And if you're perhaps a polyglot or linguaphile looking for a new challenge, then maybe learning a bit of Mandarin, Urdu, or even Persian might just be up your alley!
For English-speakers, this is an especially difficult language to learn. Navajo is a verb-centered language and the majority of English adjectives don't even have a direct translation to the Native American language, according to Unbabel.
In a category ranked from one to five—one being languages most similar to English and five being languages that are exceptionally difficult for English-speakers to learn—Finnish earns a four, according to Effective Language Learning.
If you're planning a trip to Pakistan, Urdu might be a useful language to learn. It's an official language of the country, but be warned: learning Urdu won't be easy!
This is the most spoken language with roughly a billion Mandarin-speakers in the world, according to Babbel. And it's absolutely one of the hardest to learn!
Along with Mandarin, Cantonese is also spoken throughout China and is an extremely useful (but difficult) language to learn. It is also spoken in Thailand, Malaysia, and Vietnam.