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

Example Sentences

Pedaling down the beach during a pink-hued Tel Aviv dusk, he tells his infant son in the baby seat to give up.

From Los Angeles Times • Apr. 3, 2026

The drug, for the rare disease hypophosphatasia, showed positive results in infant trials but not in adult/adolescent trials.

From The Wall Street Journal • Mar. 31, 2026

Despite a 17% drop in 2025 births, policies create investment niches in fertility, infant products, and family infrastructure, viewed as a consumption policy.

From Barron's • Mar. 30, 2026

In India's Western Ghats, a lion-tailed macaque races along a path, its infant clinging close and both pairs of eyes fixed ahead.

From BBC • Mar. 25, 2026

Singer recalled that, although he had been deaf since he was an infant, he had not always been a real mute.

From "The Heart is a Lonely Hunter" by Carson McCullers

Related Words

• child
• kid
• newborn
• toddler