I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

During which month do people sleep the least?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

At a bar, three friends, Mr Green, Mr Red and Mr Blue, were having a drink. One man was wearing a red suit; one a green suit; and the other a blue suit. 'Have you noticed,' said the man in the blue suit, 'that although our suits have colours corresponding to our names, not one of us is wearing a suit that matches our own names?' Mr Red looked at the other two and said, 'You're absolutely correct. What colour suit is each man wearing?

what does this below rebus represent identXQQQQQME

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

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?