What is at the end of a rainbow?

What English word has three consecutive double letters?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

The more it dries, the wetter it becomes. Can you tell what it is?

What word is pronounced the same if you take away four of its five letters?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

I have teeth but i don't bite. Who Am I ?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

What runs around the whole yard without moving?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho