What is the grammar of "ごく" in "ごくかすか" mean?


"かすか" means "faint".  
"ごくかすか" mens "very faint".

What part of speech is "ごく"? An inflection of "ごい"? What might either mean?




「ごく」 in 「ごくかすか」 is an adverb meaning "extremely".

In kanji, it is written as 「極{ごく}」.

[![enter image description
here](https://i.stack.imgur.com/ZDPJG.jpg)](https://i.stack.imgur.com/ZDPJG.jpg)

This curry is named 「男{おとこ}の極旨黒{ごくうまくろ}カレー」, literally, "Extremely Tasty Black
Curry for Men".




「ごく」 in 「ごくかすか」 is an adverb meaning "extremely".

In kanji, it is written as 「極{ごく}」.

[![enter image description
here](https://i.stack.imgur.com/ZDPJG.jpg)](https://i.stack.imgur.com/ZDPJG.jpg)

This curry is named 「男{おとこ}の極旨黒{ごくうまくろ}カレー」, literally, "Extremely Tasty Black
Curry for Men".

