easy
The fast rabbit crossed the grass.
What does Fast mean?
quick or speedy
Dictionary definition
Moving, happening, or working quickly.
Example sentences
Fast in a sentence
medium
We took a fast train into the city.
hard
A fast response helped the team fix the problem.
Writing practice
Ready to write your own? Study the examples, then practice fast in a sentence with Sentence Builder checklist feedback.
Quick practice
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Practice the meaning of Fast
Answer three quick questions about its meaning and related words.
Question 1 of 3
Practice 1
What does fast mean?
The correct answer matches the meaning of fast.
Practice 2
Which word or phrase is closest in meaning to fast?
Quick is close in meaning to fast.
Practice 3
Which word or phrase is most opposite in meaning to fast?
Slow contrasts with fast.
Practice complete
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You completed 3 questions.
Pronunciation coach
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Fast
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FAST
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FAST
Learn
WordFast.
Partadjective.
MeaningFast means quick or speedy.
ExampleExample: The fast rabbit crossed the grass.
Your turn
Say Fast
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Nice work—you practiced fast.
Synonyms
Words like Fast
Antonyms
Opposite words
Synonym practice
Want to practice fast synonyms in context? Try a Synonym Search question like "The rabbit moved fast when the gate opened," then compare close word choices. Practice fast synonyms.
Word family
Fast word family
Related words
Explore related words
Student support
Understand Fast
Hint for students
Fast means quick or moving with a lot of speed. In most classroom sentences, it describes how quickly someone or something moves or happens.
Common mix-up
Fast is not the same as first. Fast tells speed; first tells order.
Try it in class or at home
Write one sentence that shows fast without using the word fast. Model sentence: The puppy raced across the yard before anyone could catch it. Clue words: raced, before anyone could catch it Now try your own sentence. Ask: Does my sentence show quick movement or quick action?
Teacher prompt
Ask students to explain this model sentence: "The rabbit was fast and reached the garden before the turtle." Why does fast fit better than strong?
Learning activities
Practice Fast and explore more word games
Cards labelled “Practice FAST” keep this word in focus. Explore cards open games with other words.
Practice FAST
Sentence Builder
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Write a sentence with FAST
Explore · Spelling
Spell Hive
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Vocabulary Match
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Explore · Context
Context Clue Challenge
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Explore · Scramble
Scrambled Bees
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