Unclear. Write as is pronounced in English or how it's written or what?
As for pronunciation, the Klingon word nay should be pronounced similar the English word "night", but without the "t".
So it should be pronounced nigh? Which is an actual word, I swear.
That's right, it's pretty close to the English word "nigh".
Did you get an exercise with "the letter n" as a prompt and a box saying "Write in Klingon"?
It wants you to write the name of the letter n in Klingon.
In English, it's called en; in Klingon, it's called nay.