to zero

To adjust a gun or rifle so it shoots accurately at a set distance

To align a sight with a barrel to make shots accurate

To put parts in the wrong position so they do not line up

To become successful and respected after being unknown or unsuccessful

To focus closely on a specific target

To give most attention to one person or thing

To adjust a gun or rifle so it shoots accurately at a set distance

To put a device like a scale or gauge back to zero

The place in New York City where the World Trade Center was before the 2001 terrorist attacks

A policy that makes people follow rules with no exceptions, even for small mistakes

The place where a major disaster or attack happens, often the area most affected

A strict rule that gives the same punishment for every bad act with no exceptions

A situation where one person's gain is exactly another person's loss

The lowest possible temperature when tiny particles almost stop moving

The exact time when a planned action begins

First known person infected in an outbreak who may spread the disease to others

A position on a scale where the value is zero and measurements start

The exact place on the ground most damaged by a bomb or explosion

A way to stop making trash by reusing, recycling and using fewer things

The size of all whole numbers like 0, 1, 2 and so on, the smallest infinity

Person who is the first source of a spreading trend, like a rumor or scandal

A software flaw attackers use before developers know or fix it

A possible global conflict using new kinds of attacks like hacking and harm from climate change

A bond sold at a large discount that pays no regular interest and repays full value at maturity

An investment sold for less than its full value that pays no interest until it ends

A hole in software that attackers use before developers release a fix

A loan you buy for less than its value that pays no interest until it ends

A bond sold for less than its value that pays no interest and gives the full amount when it ends