Other than the word "contact", as in "please contact me", it is very unclear what you are trying to spell. There does not seem to be a relatable word in the English language with the spelling you have given.
Please try and re-ask the question again trying to spell it a different way. Or write in the question how it is pronounced instead of spelt. "Con-Acth" does not sound like any English word.
the hardest word to spell is: perpondickulor
The Spanish word for "spell" (as in letters in a word) is "deletrear" Which translated lyerally means to separate the letters. The word for "spell" (as in time) is "temporada". The word for "spell" (as in hex) is "encanto".
The letters spell the word geometrical.
The letters spell the word "freelance."
The letters spell the word casino.
What word does these notes on the staff spell?
Those letters will spell the word vinegar.
These letters unscramble to spell the word herbal.
Unscrambled, the letters 'cureed' spell the word reduce.
The word is spelled "fascinating". There is a "c".
The letters can spell the word publications (or No, a publicist!).
The letters APTRUSIS spell the word "upstairs."