What is the language with smallest number of vowels?

It's difficult to definitively say which language has the *absolute* fewest vowels, as there are different ways to define and count vowels.

However, some languages commonly cited for having a small number of vowels include:

* Rotokas (Papua New Guinea): This language is often mentioned as having only three vowels: /a/, /e/, and /o/.

* Hawaiian: This language has only five vowels: /a/, /e/, /i/, /o/, and /u/.

* Rarotongan (Cook Islands): This language also has five vowels: /a/, /e/, /i/, /o/, and /u/.

It's important to note that these are just a few examples, and the definition of what constitutes a "vowel" can vary. Some languages might have additional vowel sounds, while others might have fewer than five.

Additionally, many languages have diphthongs (combinations of two vowels), which can add complexity to their vowel system.

Ultimately, determining the language with the "smallest number of vowels" depends on the specific criteria used to define and count vowels.