easy
This is a serious safety rule.
What does Serious mean?
important and needing careful thought.
Dictionary definition
Important and needing careful attention; not playful in tone.
Example sentences
Serious in a sentence
medium
He gave a serious answer to the question.
hard
A serious mistake can be fixed faster when people act honestly.
Writing practice
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Quick practice
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Practice the meaning of Serious
Answer three quick questions about its meaning and related words.
Question 1 of 3
Practice 1
What does serious mean?
Serious means important and needing careful thought.
Practice 2
Which word or phrase is closest in meaning to serious?
Important is close in meaning to serious in this context.
Practice 3
Which word or phrase is a useful contrast for serious?
Playful contrasts with serious in this context.
Practice complete
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You completed 3 questions.
Pronunciation coach
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Serious
Voice settings
Sounds like
seer · ee · us · strongest beat: seer
Tap each sound part, then blend the whole word together.
Learn
WordSerious.
Partadjective.
MeaningSerious means important and needing careful thought.
ExampleExample: This is a serious safety rule.
Word breakdown
3 syllables. Say each part, then blend the word.
- Syllables
- seer · ee · us
- Strongest beat
- seer
- Ending
- us
- Tip
- Put a little extra energy on seer.
Your turn
Say Serious
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Ready when you are.
Nice work—you practiced serious.
Synonyms
Words like Serious
Antonyms
Opposite words
Synonym practice
Want to practice serious synonyms in context? Try a Synonym Search question like "The storm caused severe damage along the coast," then compare close word choices. Practice serious synonyms.
Word family
Serious word family
Base word
serious
adverb
seriously
In an important or thoughtful way.
Related words
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Learning activities
Practice Serious and explore more word games
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Sentence Builder
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Synonym Search
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Explore · Scramble
Scrambled Bees
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