infancy

noun

in·​fan·​cy ˈin-fən(t)-sē 

plural infancies

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

The Blossom Hill location is Action Day’s 14th campus, joining a child development hub that serves roughly 3,000 students ranging in age from infancy through eighth grade. — Anne Gelhaus, Mercury News, 28 June 2026

Streaming numbers are in their relative infancy and TV ratings are now dissected with multiplatform caveats. — Erik Hayden, HollywoodReporter, 25 June 2026

For over 40 years now, Canadian filmmaker Guy Maddin has made some of the strangest, most beautiful movies in existence, films that replicate the magical qualities of cinema in its infancy, both paying tribute to Maddin’s influences and wryly satirizing them. — Jim Hemphill, IndieWire, 25 June 2026

About half need open-heart surgery during infancy. — Michelle Sie Whitten, STAT, 25 June 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing infancy

• in one's infancy

Kids Definition

infancy

noun

in·​fan·​cy ˈin-fən-sē 

plural infancies

1

: early childhood

2

: a beginning or early period of existence

Medical Definition

infancy

noun

in·​fan·​cy ˈin-fən-sē 

plural infancies

1

: early childhood

2

: the legal status of an infant

Legal Definition

infancy

noun

in·​fan·​cy ˈin-fən-sē 

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