It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Can it be possible to build a house that has all its four walls facing towards the South?

How can one talk without saying a single word?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

What came first, the chicken or the egg?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?