inked
Ink
A three letter word for writing quickly is to jot.
The letter 'w'.
Fluid
aneroid
It is not the letter I, but the word "I" that appears too often in many people's writing as the first word in a sentence. Unless you are writing a first-person narrative, good style is to avoid beginning sentences with "I."It is much better to use another word other than I because it is usually a over used word when writing a letter.
A Desk
pen
Paper.
Written... :)
fluid
A silent letter in a word is called a "mute letter" or a "silent consonant." These are letters in a word that are not pronounced when speaking the word, but are still included when writing it.