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.
To estimate what type of spectral resolution would be needed to detect biological signatures on our planet in its infancy, the team modeled what HWO would see when staring at versions of Earth through geological time. Paul Sutter, Space.com, 10 June 2026 It’s expected that an old galaxy will fizzle out over billions of years, but astronomers’ expectations were turned upside down when the James Webb came online in 2022 and observed a whole graveyard of moribund galaxies when the universe was still in its infancy. Frank Landymore, Futurism, 10 June 2026 While the prospectus acknowledges the technology is in its infancy, the plans align with the Gulf’s broader strategic ambitions of building out their digital and communications infrastructure. Melissa Hancock, Fortune, 9 June 2026 Youth clubs were in their infancy and didn’t require a second mortgage to join. Mark Zeigler, San Diego Union-Tribune, 9 June 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

Browse Nearby Words

Cite this Entry

“Infancy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infancy. Accessed 15 Jun. 2026.

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

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