easy
This is a complex science question.
What does Complex mean?
Made of many parts and not simple.
Dictionary definition
Made of many connected parts; not simple or easy to understand quickly.
Example sentences
Complex in a sentence
medium
The plot became more complex in chapter five.
hard
Complex ideas are easier after you break them into steps.
Writing practice
Ready to write your own? Study the examples, then practice complex in a sentence with Sentence Builder checklist feedback.
Quick practice
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Practice the meaning of Complex
Answer three quick questions about its meaning and related words.
Question 1 of 3
Practice 1
What does complex mean?
Complex means made of many connected parts; not simple or easy to understand quickly.
Practice 2
Which word or phrase is closest in meaning to complex?
Complicated is close in meaning to complex in this context.
Practice 3
Which word or phrase is a good contrast to complex?
Simple gives a useful opposite or contrast to complex.
Practice complete
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Complex
Voice settings
Sounds like
kom · pleks · strongest beat: kom
Tap each sound part, then blend the whole word together.
Learn
WordComplex.
Partadjective.
MeaningComplex means Made of many parts and not simple.
ExampleExample: This is a complex science question.
Word breakdown
2 syllables. Say each part, then blend the word.
- Syllables
- kom · pleks
- Strongest beat
- kom
- Ending
- pleks
- Tip
- Put a little extra energy on kom.
Your turn
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Nice work—you practiced complex.
Synonyms
Words like Complex
complicatedUse when something has many difficult parts.
detailedUse when many connected pieces are included.
Antonyms
Opposite words
Synonym practice
Want to practice complex synonyms in context? Try a Synonym Search question like "The article struck a complex tone that resisted easy conclusions," then compare close word choices. Practice complex synonyms.
Word family
Complex word family
Base word
complex
noun
complexity
The quality of being complex.
Related words
Explore related words
Student support
Understand Complex
Hint for students
Complex means made of many parts or difficult to understand.
Common mix-up
Complex is not the same as impossible. Something complex may be hard, but it can still be understood step by step.
Try it in class or at home
Write one sentence that shows complex without using the word complex. Example: The instructions had many steps, diagrams, and tiny parts to connect. Clue words: many steps, diagrams, tiny parts Now try your own sentence. Ask: Does my sentence show something with many parts or difficult details?
Teacher prompt
Ask students to explain this model sentence: "The machine was complex because it had many connected parts." Why does complex fit better than simple?
Learning activities
Practice Complex and explore more word games
Cards labelled “Practice COMPLEX” keep this word in focus. Explore cards open games with other words.
Practice COMPLEX
Sentence Builder
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Spell Hive
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Vocabulary Match
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Context Clue Challenge
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Use context clues
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Synonym Search
Compare meanings in a question that includes COMPLEX.
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