Infant vs Youngster

When to use each in English, with meaning, register, and examples.

Infant

Top 2,000 (common)C1noun

Youngster

Top 5,000 (fairly common)C1noun
Most common: Infant
 InfantYoungster
Pronunciation🇬🇧 /["/ˈɪnfənt/"]/🇺🇸 /["/ˈɪnfənt/"]/🇬🇧 /["/ˈjʌŋstə(r)/"]/🇺🇸 /["/ˈjʌŋstər/"]/
MeaningA very young baby, usually under one year old.A young person, especially a child or teenager.
ExampleThe infant was fast asleep in the cradle.The camp is for youngsters aged 8 to 14.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 5,000 (fairly common)
CEFR levelC1C1
Part of speechnounnoun
Collocationsyoung, month-old, two-month-old, breastfeed, feed, nurse, death, mortality, child, sudden infant death syndromeyoungster club, youngster athlete, youngster generation
Antonymsadult, grown-upelder, adult
Common mistakesConfusing infant with toddler, which refers to a slightly older age range., Using 'infant' when talking about older children., Incorrectly applying the term in non-medical contexts.Confusing with 'youth', which can imply a broader age range., Using it interchangeably with 'kid' in formal contexts., Incorrectly pluralizing as 'youngsterses'.
Usage notesUsed in everyday conversation and in medical contexts. Generally appropriate when discussing babies or child development. Avoid in casual settings where relaxed language is used; 'baby' might be more common.Used to refer to children or teens in general contexts. Avoid in highly formal writing; use 'youth' instead in academic settings.

See it in real clips

Infant

Frequently asked questions: Infant vs Youngster

What's the difference between Infant and Youngster?

Infant: A very young baby, usually under one year old. Youngster: A young person, especially a child or teenager.

Which is more common: Infant and Youngster?

Infant is the most common in everyday English.

Are Infant and Youngster the same CEFR level?

Infant: C1, Youngster: C1 on the CEFR scale.

What part of speech are Infant and Youngster?

Infant: noun, Youngster: noun.

Can you show an example of each?

Infant: The infant was fast asleep in the cradle. Youngster: The camp is for youngsters aged 8 to 14.

Can I use Infant and Youngster interchangeably?

Not always. Infant and Youngster are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

Related comparisons