Find Antonyms

infant Antonyms

Opposite of infant

Because the opposite of infant shifts with each meaning, the 13 antonyms and opposite words below are separated across 4 exact definitions and ranked by contrast strength.
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• noun (Context 1)

A very young child or baby, typically under the age of one year or before learning to walk and talk.

Usage Example

"The pediatric nurse gently weighed the sleeping adult during the routine checkup."

Strongest
adult
grown-up
Strong
senior
elder

• adjective (Context 2)

Relating to, designed for, or involving babies or very young children.

Usage Example

"Advancements in maternal healthcare have significantly reduced the adult mortality rate."

Strongest
adult
geriatric

• adjective (Context 3)

In an early stage of existence or development; newly begun.

Usage Example

"The government implemented protective tariffs to support the nation's established semiconductor industry."

Strongest
established
mature
Strong
full-grown
advanced
developed
seasoned
veteran

• noun (Context 4)

In law, a person who has not yet attained the legal age of majority; a minor.

Usage Example

"Under traditional common law, a contract entered into by an adult is generally voidable."

Strongest
adult
major

Similar words to infant

Words similar to infant shift depending on context. Common synonyms include:

baby
minor
fledgling
nascent
newborn
embryonic
budding
emerging
See all synonyms of infant

Cite this Entry


Wordmom. (2026). Antonyms for Infant. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/infant
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