1
: the first part of a child's life : the time in your life when you are a baby
She was often sick during her infancy.
a skill developed in infancy
2
: a beginning : an early stage of development
She has been a member of the church since its infancy.
when the Internet was still in its infancy [=very new]
Cite this Entry
“Infancy.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/infancy. Accessed 16 Apr. 2026.
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