Adolescent and Infantile

Adolescent

Adolescent adjective - Being in the early stage of life, growth, or development.
Usage example: an adolescent sheepdog, who hasn't quite gotten the hang of keeping the sheep huddled together

Infantile is a synonym for adolescent in immature topic. In some cases you can use "Infantile" instead an adjective "Adolescent".

Nearby Word: adolescence

Infantile

Infantile adjective - Having or showing the annoying qualities (as silliness) associated with children.
Usage example: the infantile humor that teenage boys are justly famous for

Adolescent is a synonym for infantile in childish topic. You can use "Adolescent" instead an adjective "Infantile".

Nearby Words: infant, infancy, infantility

Both words in one sentence

  • Born as an Adult The later episode "Humiliation 101" reveals that while she came online with an adolescent body, she still had an infantile mind and had to be raised like a kid.
Cite this Source
Infantile and Adolescent. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/adolescent/infantile
Adolescent & Infantile. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/adolescent/infantile>.
Infantile or Adolescent. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/adolescent/infantile.
Google Ngram Viewer shows how "adolescent" and "infantile" have occurred on timeline