infancy

noun

in·​fan·​cy ˈin-fən(t)-sē How to pronounce infancy (audio)
plural infancies
Synonyms of infancynext
1
: early childhood
2
: a beginning or early period of existence
3
: the legal status of an infant

Examples of infancy in a Sentence

She was often sick during her infancy. a skill developed in infancy She has been a member of the church since its infancy.
Recent Examples on the Web
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.
The goal is to advance an industry that's still in its infancy but has enormous potential for cleanly generating large amounts of electricity. — ABC News, 26 Aug. 2026 According to the National Cancer Institute, cancer remains the leading cause of death by disease after infancy among children in the United States. — Jason Collins, The Orlando Sentinel, 25 Aug. 2026 From infancy onward interactions between intestinal microbes and immune cells help the body distinguish harmless microorganisms from disease-causing pathogens and regulate inflammatory responses. — Encyclopedia Britannica, 19 Aug. 2026 While the business of cosmetically modified, futuristic-looking pets remains in its infancy, animal rights groups worry that eventually the creatures will be created, sold and later discarded in crowded municipal shelters. — Dakota Smith, Los Angeles Times, 14 Aug. 2026 See All Example Sentences for infancy

Word History

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of infancy was in the 14th century

Phrases Containing infancy

Browse Nearby Words

infamy
infancy
infang
See all Nearby Words

Cite this Entry

“Infancy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infancy. Accessed 1 Sep. 2026.

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Kids Definition

infancy

noun
in·​fan·​cy ˈin-fən-sē How to pronounce infancy (audio)
plural infancies
1
: early childhood
2
: a beginning or early period of existence

Medical Definition

infancy

noun
in·​fan·​cy ˈin-fən-sē How to pronounce infancy (audio)
plural infancies
1
: early childhood
2
: the legal status of an infant

Legal Definition

infancy

noun
in·​fan·​cy ˈin-fən-sē How to pronounce infancy (audio)
plural infancies
1
: the legal status of an infant : minority
2
: the affirmative defense of lacking legal capacity (as to make a contract or commit a crime) because of being too young and especially because one's age is below an age set by statute

More from Merriam-Webster on infancy

Thesaurus: All synonyms and antonyms for infancy

Britannica.com: Encyclopedia article about infancy

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