infant

American  

[in-fuhnt] / ˈɪn fənt /

noun

1. a child during the earliest period of their life, especially before they can walk; baby.

2. Law. a person who is not of full age, especially one who has not reached the age of 18 years; a minor.

3. a beginner, as in experience or learning; novice.

   The new candidate is a political infant.

4. anything in the first stage of existence or progress.

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adjective

1. of or relating to infants or infancy.

   infant years.

2. being in infancy.

   an infant king.

3. being in the earliest stage.

   an infant industry.

4. of or relating to the legal state of infancy; minor.

infant British  

/ ˈɪnfənt /

noun

1. a child at the earliest stage of its life; baby

2. law another word for minor

3. a young schoolchild, usually under the age of seven

4. a person who is beginning or inexperienced in an activity

5. (modifier)

   1. of or relating to young children or infancy

   2. designed or intended for young children

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adjective

1. in an early stage of development; nascent

   an infant science or industry

2. law of or relating to the legal status of infancy

Other Word Forms

• infanthood
  noun
• infantlike
  adjective

Etymology

Origin of infant

First recorded in 1350–1400; from Latin infant- (stem of infāns ) “small child,” literally, “one unable to speak,” equivalent to in- in- ³ + -fāns, present participle of fārī “to speak”; replacing Middle English enfaunt, from Anglo-French, from Latin, as above

Explanation

An infant is a baby. When you were an infant, you weren't able to walk, talk, or feed yourself (but you had a pretty mean burp). Infant is most often used for a very young human, but you can also use it to talk about animal babies. People are considered infants from the moment of birth until approximately one year old, an age when many babies are starting to walk and talk. At this point, they're commonly called toddlers instead of infants. The Latin root is infantem, which as a noun means "babe in arms," and as an adjective "unable to speak."

Example Sentences

In November 2025, all ByHeart Whole Nutrition Infant Formula products were recalled for possible contamination with Clostridium botulinum, a bacteria that causes botulism, an extremely deadly illness.

From Salon • Mar. 20, 2026

Organisers have instead moved the ceremony at the Olympia archaeological museum, where one of Greece's most famous classical sculptures, Hermes and the Infant Dionysus by Praxiteles, is housed.

From Barron's • Nov. 25, 2025

Each child consumed ByHeart Whole Nutrition Infant Formula products, and all were hospitalized, the agency said.

From The Wall Street Journal • Nov. 11, 2025

Infant care is the most expensive to provide and the most difficult to provide.

From Los Angeles Times • Sep. 9, 2025

As the bargaining representative for Ms. Vivian Shawcurt, Summerhill Infant and Child Care Agency is hereby requested to provide documentation showing either that she has found alternate placement or that she has returned to England.

From "Silent To The Bone" by E.L. Konigsburg

Related Words

• child
• kid
• newborn
• toddler