easy
In class, we used unstable to describe what happened in the story.
What does Unstable mean?
not steady.
Dictionary definition
not steady and likely to change or fail.
Example sentences
Unstable in a sentence
medium
The worksheet asked students to explain unstable in an everyday example.
hard
During discussion, students compared how unstable changed the outcome of the situation.
Writing practice
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Quick practice
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Practice the meaning of Unstable
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What does unstable mean?
Unstable means not steady.
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Unstable
Voice settings
Sounds like
un · stay · bul · strongest beat: stay
Tap each sound part, then blend the whole word together.
Learn
WordUnstable.
Partadjective.
MeaningUnstable means not steady.
ExampleExample: In class, we used unstable to describe what happened in the story.
Word breakdown
3 syllables. Say each part, then blend the word.
- Syllables
- un · stay · bul
- Strongest beat
- stay
- Ending
- bul
- Tip
- Put a little extra energy on stay.
Your turn
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Synonyms
Words like Unstable
related termSimilar meaning used in caution or problem contexts.
close wordA near meaning with small usage differences.
Antonyms
Opposite words
opposite conditionA useful contrast in meaning.
safer stateShows a more secure opposite situation.
Synonym practice
Want to practice unstable synonyms in context? Try a Synonym Search question like "The old bridge looked unstable after the flood," then compare close word choices. Practice unstable synonyms.
Word family
Unstable word family
Base word
unstable
Related words
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Student support
Understand Unstable
Hint for students
Unstable means not steady and likely to change, tip, move, or fail. It can describe objects, systems, or situations.
Common mix-up
Unstable is not always about danger. It can simply mean something is not steady or may change quickly.
Try it in class or at home
Write one sentence that shows unstable without using the word unstable. Then underline the clue words that show wobbling, changing, tipping, failing, or not staying steady. Example: The tall tower of blocks shook each time someone walked past. Clue words: tall tower, shook, walked past Now try your own sentence. Ask: Does my sentence show something that is not steady or may change suddenly?
Teacher prompt
Ask students to explain this model sentence: "The stack of boxes was unstable on the uneven floor." Why does unstable fit better than stable?
Learning activities
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Synonym Search
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