Show:
Prefixes
Suffixes
Words with Multiple Meanings
Adverbs (How, When, Where)
"What's Faster Than a Speeding Cheetah?"
100

Adding this prefix to "possible" makes it mean "not possible."

im-

100
  • This common suffix can be added to a noun to turn it into an adjective meaning "full of," as in "joy" to "joyful."

-ful

100

This word can mean the speed at which something moves or a money charged for a service.


rate

100
  • This adverb describes doing something in a quiet way.

softly

100

What is the fastest animal on two legs?

An ostrich.

200
  • This prefix means "before" and can be added to "view" to mean seeing something beforehand.

pre-

200
  • Add this suffix to "quick" to mean something done in a fast way.

-ly

200

The middle of something or a means of communication.

middle

200
  • This adverb tells us something is done at this current time.

now

200

A peregrine falcon is very fast at....

diving

300
  • You can add this prefix to "heat" to describe warming something up again.

re-

300
  • Add this suffix to "science" to mean someone who studies science.

-ist

300

This word can mean an on/off button or a change.

switch

300
  • This word describes where you might keep something, especially if it's not nearby.

away

300

Jet planes can travel faster than the speed of...

sound

400
  • This prefix means "very small" and can be added to "scope". A device used to look at small organisms like bacteria and viruses.

micro-

400
  • Add this suffix to "child" to mean more than one

-ren

400

It can mean the strength to do something, a form of energy, or the authority to make decisions.

power

400
  • This adverb describes how you might laugh if you find something very funny.

loudly

400

A space meteoroid goes six times faster than a...

rocket ship

500
  • If you add this prefix to "water," it means something that is below the surface of the water

under-

500

This suffix is added to a noun meaning "the state or quality of something". Such the state of something being beautiful.

-ty

500

To cover a surface, to unfold, or to make known.

spread
500
  • This adverb tells us when we need to show up if we are not to be late.

early

500

How fast does light travel?

299,338 kilometers (186,000 miles) per second