I don't think that it forms a single word. However, the longest words that can be formed are 'arachnoids' and 'carangoids'.
The letters 'imnohntesn' cannot unscramble to spell a word. The longest possible word is mentions.
Action
Neighborhood
Enlargement.
"segment"
laetriles
The unscrambled word is kosher.
The letters 'angaui' unscramble to spell the word iguana.The next possible longest word is again.
The letters 'iveco' unscramble to spell the word voice. This is the only possible anagram for these letters.
_____?_______ courses
French Fries?
Baked Potatoes.