What is the correct spelling of coght?

Answer 1

If you mean the past tense of catch, as in catching something (a ball; a germ), the word is caught, pronounced "kot".

He was sure he caught the flu.

I caught my neighbor looking in my window.

Or perhaps you mean...

Sometimes people mispronounce the words cough and coughed as though it ends in a a "ght" sound (incorrect).

He has a cough, fever, and chills.

I coughed so hard I pulled a muscle.

As comparison of these words:

Battling a tickling cough, I coughed just as I caught the ball.

She said she caught her cough from me, but it's the airborne germ that infects people,.

Answer 2

Coght could be caught? A sample sentence in which the word is used would have helped!