Answer:
One more than a duet.
You speak this when you are being sincere.
There is a word of letters three, Add one letter to it and none thereβll be. What is the word?
Lots of them make up a word, And lots of words are in them. It's easy when you think about it. A while ago we stamped and mailed them.
What can be any size or shape and gets bigger the more you take from it?
A word of five letters, Upside down is the same, A shark does this, But itβs not to blame. What is the word?