infancy

US /ˈɪn.fən.si/
UK /ˈɪn.fən.si/
"infancy" picture
1.

the period of a child's life before they can walk or talk; babyhood

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During infancy, babies learn to recognize faces and voices.
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The first two years of life are considered infancy.
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babyhoodearly childhoodtender age
2.

the early stage of development of something

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The project is still in its infancy, but it shows great promise.
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The internet was in its infancy in the 1990s.
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beginningonsetdawngenesisoutsetstart