as in childish
having or showing the annoying qualities (as silliness) associated with children
the infantile humor that teenage boys are justly famous for
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Recent Examples of infantile
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.
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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
Recent Examples of Synonyms for infantile
Adjective
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But worrying about making your space look too childish can be tricky.Cristian Esteban, Rolling Stone, 12 Dec. 2024
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All the Jingle Ladies by Beth Garrod After her parents went viral with an earworm of a Christmas song (and music video featuring her childish antics), Molly has been a true Grinch.Maureen Lee Lenker, EW.com, 8 Dec. 2024
Adjective
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Angel Batista is already working there, now played by James Martinez, and Masuka (Alex Shimizu) is Dexter’s disturbingly immature supervisor.Ben Travers, IndieWire, 13 Dec. 2024
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Edamame, Soybeans, and Soy Products Edamame is an immature soybean in green pods.Merve Ceylan, Health, 9 Dec. 2024
Adjective
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Puberty blockers stop the body from making testosterone and estrogen to delay the changes of puberty, giving the adolescent more decision-making time.Maureen Groppe, The Courier-Journal, 3 Dec. 2024
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An adolescent often wonders why the world seems to be conspiring against them.Russell Shaw, The Atlantic, 25 Oct. 2024
Adjective
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Leyva has been charged with four counts of first-degree murder and was booked into a juvenile detention center in Albuquerque after being medically cleared at a regional hospital.Jessie Yeung, CNN, 16 Dec. 2024
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Cops said he would be taken later to a juvenile detention facility.Joseph Wilkinson, New York Daily News, 15 Dec. 2024
Thesaurus Entries Near infantile
Cite this Entry
“Infantile.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infantile. Accessed 21 Dec. 2024.
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