noun

firstborn

FURST-bawn

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

noun

The first child born into a family.

"Their firstborn arrived two weeks early."

adj

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

firstborn plural, firstborns plural

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Can you complete this real example?

Their _____ arrived two weeks early.

From first and born.

lastborn

youngest lastborn

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.

youngest lastborn