What is so fragile that saying its name breaks it?
What is in seasons, seconds, centuries and minutes but not in decades, years or days?
There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?
You can see it everyday, But cannot touch it at will. What is it?
If nine thousand, nine hundred nine dollars is written as $9,909, how should twelve thousand, twelve hundred twelve dollars be written?
The more it dries, the wetter it becomes. Can you tell what it is?
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?
What can you catch but never throw?
What goes up but never comes down?
I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?
What English word has three consecutive double letters?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.