A nine letter word using those letters is foresight.
A science word that is six letters ans starts with the letter c is convex.
Librarian is a 9 letter word that has letters BRAIN in it.
One very long word that starts with m is: microcryptocrystalline (22 letters)
scallop
snowday
citedal
antidisestablishmentarisms Alphabet - 26 letters, starts with A
You is not a letter it is three letters in a word.
extinguish
A science word that is six letters ans starts with the letter c is convex.
advertisementaccompanimentacupuncturistapportionment
Jawed.
seeds.
axis
Librarian is a 9 letter word that has letters BRAIN in it.
jovial
there is no 9 letter word starting with e and using all of the letters. but the word unscrambled is FORGETFUL.