Now if I asked you to consider these languages, how weird would you say they were? Lithuanian, Indonesian, Turkish, Basque, and Cantonese. Surprise! They are really low on the Weirdness Index. They don’t seem typical to linguists and language learners but for these 21 features they stick with the crowd. Notice that we get isolates (like Basque) distributed throughout levels of Weirdness. Basque is “typical” but Kutenai, another isolate, is one of the weirdest of all languages. Even more surprising is that Mandarin Chinese is in the top 25 weirdest and Cantonese is in the bottom 10. This has to do with the fact that they have different sounds: Mandarin, unlike Cantonese has uvular continuants and has some limits on “velar nasals” (like English, Mandarin can have a sound like at the end of song but it can’t have that sound at the beginning of words—worldwide it’s rare to have that particular restriction).
At the very very bottom of the Weirdness Index there are two languages you’ve heard of and three you haven’t: Hungarian, normally renowned as a linguistic oddball comes out as totally typical on these dimensions. (I got to live in Budapest last summer and I swear that Hungarian does have weirdnesses, it just hides them other places.) Chamorro (a language of Guam spoken by 95,000 people), Ainu (just a handful of speakers left in Japan, it is nearly extinct), and Purépecha (55,000 speakers, mostly in Mexico) are all very normal. But the very most super-typical, non-deviant language of them all, with an Weirdness Index of only 0.087 is Hindi, which has only a single weird feature.