-ast Word Family: Word List & Practice
-ast Word Family words follow one repeating pattern, so a child who can read one of them has most of what they need to read the rest. This list has 9 grade 1-level words plus 4 decodable sentences. Practice them out loud — the most common error is dropping the final t sound and reading 'fast' as 'fas'.
- cast
- fast
- last
- mast
- past
- vast
- blast
- outlast
- contrast
Practice these words out loud
Have your child read these sentences to Word Wiz AI. It listens and shows exactly which sounds they missed, not just whether the word was right. Free, no sign-up needed to try.
Try these out loudDecodable Sentences
Every word in these sentences uses sounds your child has already learned, so they can be read by decoding rather than guessing.
- Run fast to the last mast.
- The blast was vast and fast.
- We went past the fast cast.
- Do not go too fast at last.
How to Teach -ast Word Family Words
The -ast family stacks two consonants at the end ('st'), which children usually find easier than 'nd' or 'mp' endings because the /s/ and /t/ sounds are both made near the front of the mouth and glide together naturally. 'Fast' and 'last' are extremely common words in everyday speech, so this family often clicks quickly once a child has a few solid -at or -an words under their belt.
Because the word list is relatively short, this is a good family to practice fluency rather than just accuracy — once your child can read all the words correctly, time a few rounds of reading the list aloud and see how their speed improves session to session. Fluency practice like this matters just as much as accuracy for building a reader who does not have to stop and labor over every word.
Common Mistakes to Watch For
- Dropping the final t sound and reading 'fast' as 'fas'
- Confusing short a with short u in this family
- Reading 'blast' by skipping the beginning blend consonant