The Mind Pump hosts discussed the difficulty of learning various languages and provided insights into some of the hardest languages to learn. According to the conversation, Icelandic is considered one of the hardest due to its complex pronunciation, which often lacks vowels. Additionally, Category Five languages, termed as the hardest by Doug Egge, include Arabic, Cantonese, Mandarin, Japanese, and Korean due to their unique scripts, tones, and grammatical structures.

While English is often mentioned as difficult due to its extensive slang and inconsistent rules, it is not considered the hardest compared to the aforementioned languages 1.