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noun

firstborn

FURST-bawn
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Firstborn (noun) means the first child born into a family. Example: “Their firstborn arrived two weeks early.”

noun
1
The first child born into a family.
"Their firstborn arrived two weeks early."
adj
1
Born first among siblings.
"As the firstborn son, he inherited the family farm."

How to use firstborn

Learner’s notes

In plain EnglishThe eldest child in a family.

Common pairings
firstborn child firstborn son
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Word forms

Plural
firstborns
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Fill the gap

Can you complete this real example?

Their _____ arrived two weeks early.

Etymology

From first and born.

Antonyms

Related words

Frequently asked questions

What does “firstborn” mean?
The word “firstborn” means the first child born into a family. In plain terms, the eldest child in a family.
How do you pronounce “firstborn”?
“Firstborn” is pronounced FURST-bawn (/ˈfɜː(ɹ)stˌbɔː(ɹ)n/ in IPA).
How do you use “firstborn” in a sentence?
Here is “firstborn” used in a sentence: “Their firstborn arrived two weeks early.”
What is the opposite of “firstborn”?
The opposite of “firstborn” — its antonyms — is lastborn.
What part of speech is “firstborn”?
Depending on how it is used, “firstborn” can be a noun and an adjective.
How many meanings does “firstborn” have?
“Firstborn” has 2 distinct senses listed in this dictionary. The most common is: the first child born into a family.

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