Riddle

It increases and decreases yet no one see it. It is not a fire and yet it can be quenched.

Choose an answer

A.Hunger
B.Curiosity
C.Ambition
D.Thirst
Hint: It's a word with 6 letters, starting with "T".

Answer

Thirst

Why this is the answer

Thirst is an invisible feeling that grows or fades, and like a fire, it can be "quenched" -- in this case, by drinking water.

This riddle is filed under Hard/Difficult Riddles and rated Hard.