What is at the end of a rainbow?

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

What do you answer even though it never asks you questions?

Which five letter word can be added at the end of below word to form a
valid word?

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I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

What can you catch but never throw?