infantile
adjective
in·fan·tile
ˈin-fən-ˌtī(-ə)l 
-tᵊl
-ˌtēl
-(ˌ)til
-tᵊl
-ˌtēl
-(ˌ)til
2
: suitable to or characteristic of an infant
especially
: very immature
infantile humor
Synonyms
Examples of infantile in a Sentence
the infantile humor that teenage boys are justly famous for
Recent Examples on the Web
One striking incident involves an impromptu dinner party, in which Mia and Aaryan must prepare to host their parents, friends and acquaintances while balancing Virginia’s increasingly infantile behavior.
—
Lovia Gyarkye, The Hollywood Reporter, 3 Sep. 2019
Since humans evolved to care for our young, research suggests we’re drawn to infantile features in other animals, like big eyes, round cheeks and stubby limbs.
—Hannah Richter, Smithsonian Magazine, 31 July 2024
William was diagnosed at three months with infantile spasms, a rare seizure disorder which in William's case altered his development physically and cognitively.
—Fred C. Trump Iii, TIME, 24 July 2024
And yet Hathaway’s most recent look–including those mesh slip-ons, a baggy skirt, a waistcoat, a grandma-ish sunhat and a Birkin customized with an infantile horse charm–is a return to form.
—Daniel Rodgers, Vogue, 20 June 2024
See all Example Sentences for infantile 
Lovia Gyarkye, The Hollywood Reporter, 3 Sep. 2019
Since humans evolved to care for our young, research suggests we’re drawn to infantile features in other animals, like big eyes, round cheeks and stubby limbs.
—Hannah Richter, Smithsonian Magazine, 31 July 2024
William was diagnosed at three months with infantile spasms, a rare seizure disorder which in William's case altered his development physically and cognitively.
—Fred C. Trump Iii, TIME, 24 July 2024
And yet Hathaway’s most recent look–including those mesh slip-ons, a baggy skirt, a waistcoat, a grandma-ish sunhat and a Birkin customized with an infantile horse charm–is a return to form.
—Daniel Rodgers, Vogue, 20 June 2024
See all Example Sentences for infantile
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'infantile.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near infantile
Cite this Entry
“Infantile.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infantile. Accessed 2 Oct. 2024.
Copy CitationKids Definition
infantile
adjective
in·fan·tile
ˈin-fən-ˌtīl
-tᵊl,
-ˌtēl
: of, relating to, or resembling infants or infancy
also
: childish
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