What is the six consonant?

There is no such thing as a "six consonant". It seems like you might be misunderstanding something.

Here's why:

* Consonants are individual sounds: We don't have a specific consonant called "six consonant".

* Consonants are building blocks of words: They are combined with vowels to form words.

Could you tell me more about what you are looking for? Maybe you are thinking of:

* A word with six consonants: Like "strength" or "scratch".

* A specific phonetic feature of a consonant: Some consonants share characteristics, but there's no single "six consonant" category.

Please provide more context so I can help you understand.