The word is "incisor."
I can make the word reigned.
There are no English words you can make using only those letters.
You cannot make any words with seven letters using these letters. The longest word you can make is honda.
You cannot make any words using all of these letters. The longest word you can make is moo.
face paint acquainted availed
There's no word using all the letters, here are the two longest words:tenchtenth
Using all the letters you get Hermione
Crunches can be formed using the letters cesurhcn.
Using all the letters you get locoweed.
The word "confident" can be made using all of these letters.
certainly