INFANT Synonyms: 78 Similar and Opposite Words

infant 1 of 2

noun

ˈin-fənt

Definition of infant

as in child

a recently born person infants should be kept warm at all times

Synonyms & Similar Words

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Antonyms & Near Antonyms

infant

2 of 2

adjective

as in embryonic

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of infant

Noun

Our study is the first to show that treating a woman’s depression during pregnancy may influence infant brain development. — Catherine Demers, The Conversation, 16 Oct. 2026 Early vaccination is especially important for individuals at higher risk of serious illness, such as infants and young children, older adults, pregnant people, and anyone with underlying health conditions. — Jennifer McRae, CBS News, 16 Oct. 2026

Adjective

Ruffed lemurs typically birth multi-infant litters, unlike other primate species. — Laura Baisas, Popular Science, 29 July 2026 Diagnosed with an infant high-grade glioma, a rare and aggressive brain tumor, Hadley was treated by the Center for Cancer and Blood Disorders at Children's Hospital Colorado. — Dillon Thomas, CBS News, 13 June 2026 See All Example Sentences for infant

Recent Examples of Synonyms for infant

Noun

Its spacious third row remains a particularly compelling advantage for families who regularly transport several adults or older children.

— New Atlas, New Atlas, 24 Oct. 2026
People with chronic health conditions, pregnant women, young children and anyone 65 or older are at higher risk of developing complications from the flu, and Turner urged anyone fitting those categories to take extra precautions this season.

— Mark Dee, Idaho Statesman, 24 Oct. 2026

Definition of child

Adjective

Inside those embryonic worlds, heat and pressure gave rise to more complexity—perhaps 250 distinct minerals, which fused to make the early Earth.

— Literary Hub, Literary Hub, 23 Oct. 2026
The researchers believe that small changes in the protein influence how cells twist during the earliest stages of embryonic development.

— Kaif Shaikh, Interesting Engineering, 17 Oct. 2026

Definition of embryonic

Noun

But the day after the baby was born, Uthmeier filed an emergency motion in family court to intervene in the proceedings.

— Jim Defede, Miami Herald, 26 Oct. 2026
My white grandmother gave her baby the French name Maurice out of gratitude to the doctor and nuns who delivered him.

— Literary Hub, Literary Hub, 26 Oct. 2026

Definition of baby

Adjective

Within weeks of the CEO change, however, the budding bromance was officially dead.

— Amanda Gerut, Fortune, 19 Sep. 2026
Following the characters’ daily lives as tweens, the series shows us a much more vulnerable Angelica (Cheryl Chase), and a not-so-bald Tommy’s (Elizabeth Daily) imagination evolving into a budding filmmaking career.

— Skyler Trepel, Entertainment Weekly, 20 June 2026

Definition of budding

Noun

Enroll your baby before the clock runs out Ensuring your newborn has health coverage is one of the first paperwork responsibilities that parents face in the whirlwind of bringing a baby home.

— Stephanie O'Neill, NPR, 21 Oct. 2026
It's been here since January, giving parents a way to anonymously surrender a newborn.

— Erin Jones, CBS News, 21 Oct. 2026

Definition of newborn

Adjective

For the dodo, the researchers will first harvest primordial germ cells (PGCs)—nascent cells that give rise to eggs and sperm—from the nicobar pigeon, the dodo’s closest living relative.

— Jeffrey Kluger, Time, 14 Oct. 2026
This would have been a primordial black hole (PBH), a hypothesized object formed in the universe’s earliest moments.

— Jonathan O'Callaghan, Scientific American, 2 Oct. 2026

Definition of primordial

Noun

Mystery is surrounding the deaths of a toddler and his two grandparents after the three of them were discovered dead by investigators.

— Kelsie Cairns, FOXNews.com, 23 Oct. 2026
An Overland Park mother who authorities charged with murder in the 2023 death of her 1-year-old child, alleging the toddler was malnourished and neglected, has pleaded no contest to a group of charges.

— Nathan Pilling, Kansas City Star, 23 Oct. 2026

Definition of toddler

Adjective

Over nearly two centuries in trade, the company has dealt in germinal francs, Poincaré francs, de Gaulle francs, and euros, always remaining family-owned.

— Lauren Collins, New Yorker, 7 Sep. 2026
Vaccines combining slow release and follicle targeting of antigens increase germinal center B cell diversity and clonal expansion.

— Ian Randall, MSNBC Newsweek, 19 June 2025

Definition of germinal

Browse Nearby Words

infancy

infant

infantile

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“Infant.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infant. Accessed 28 Oct. 2026.

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Synonyms of infant

noun

adjective

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