Here's a breakdown:
1. "Alphabet" as letters:
* Khmer (Cambodian): With 74 letters, Khmer technically has the most letters in its alphabet. However, it's important to note that many of these letters are actually combinations of other letters, so it's debatable if they count as individual letters.
2. "Alphabet" as symbols:
* The International Phonetic Alphabet (IPA): While not technically a language, the IPA uses a system of 107 symbols to represent all the sounds of human speech.
3. "Alphabet" as total unique characters:
* Some languages with complex writing systems, like Chinese, Japanese, or Korean, have thousands of characters. They are not considered "alphabets" in the traditional sense, but they do use a system of symbols to represent words or syllables.
Therefore, the answer depends on your definition of "alphabet". If you consider the traditional definition of an alphabet as a set of letters used to represent sounds, then Khmer is likely the winner. If you include all symbols, then the IPA has the most.