1
as in young
being in the early stage of life, growth, or development
immature frogs are called "tadpoles"
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in childish
having or showing the annoying qualities (as silliness) associated with children
an immature teenager who still threw tantrums
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in inexperienced
lacking in adult experience or maturity
many high school students are still too immature to foresee the consequences of their actions
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of immature
Edamame are young, immature soybeans.
—
Amy Brownstein, Verywell Health, 26 Feb. 2026
The film’s vintage patina doesn’t detract from rising actor Will Price’s confident performance as an immature mobster who prefers bitcoin to stacks of Benjamins.
—Amy Nicholson, Los Angeles Times, 30 Jan. 2026
Unlike older drugs, this formula safely accounts for a baby’s immature metabolism.
—Kwesi Akonu Adom Mensah Forson, The Conversation, 26 Jan. 2026
This is really a way to tell the story from a much more immature point of view.
—Joe Lynch, Billboard, 26 Jan. 2026
See All Example Sentences for immature
Amy Brownstein, Verywell Health, 26 Feb. 2026
The film’s vintage patina doesn’t detract from rising actor Will Price’s confident performance as an immature mobster who prefers bitcoin to stacks of Benjamins.
—Amy Nicholson, Los Angeles Times, 30 Jan. 2026
Unlike older drugs, this formula safely accounts for a baby’s immature metabolism.
—Kwesi Akonu Adom Mensah Forson, The Conversation, 26 Jan. 2026
This is really a way to tell the story from a much more immature point of view.
—Joe Lynch, Billboard, 26 Jan. 2026
See All Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
-
Olivia, meanwhile, is both a protector and leader with her younger sister.—
Patrick Z. McGavin,
Chicago Tribune,
19 Mar. 2026
-
Which is why once again Samara Weaving’s Grace MacCaullay is on the run for her life, only now with her younger sister Faith (Kathryn Newton) in tow.—
Stephen Schaefer,
Boston Herald,
19 Mar. 2026
Adjective
-
The more childish and unrefined, the better.—
Maddie Connors,
Los Angeles Times,
16 Mar. 2026
-
Child actor Jax James has been set in the series regular role of Dougie, Maureen’s only son who is not even ten but acts like a 60-year-old scholar and has no time for childish fancies.—
Nellie Andreeva,
Deadline,
10 Mar. 2026
Adjective
-
Don José is an inexperienced Spanish soldier who falls in love with the seductive Gypsy, Carmen.—
Pam Kragen,
San Diego Union-Tribune,
15 Mar. 2026
-
Dangerous rip currents are expected at regional beaches, prompting officials to warn against swimming, especially for inexperienced swimmers.—
Joaquin Palomino,
San Francisco Chronicle,
14 Mar. 2026
Adjective
-
Roberge also had said the Tolland facility, which could have begun operating in 2029, would have housed as many as 18 teenage boys being held in state juvenile detention centers in Hartford and Bridgeport, which were not designed to house youths for long periods of time.—
Keith M. Phaneuf,
Hartford Courant,
14 Mar. 2026
-
Two juvenile suspects exited the bus and fled the scene after the shooting.—
Garrett Behanna,
CBS News,
14 Mar. 2026
Adjective
-
The detrimental effects of early start times affect high school students during adolescent development.—
Letters to the Editor,
The Orlando Sentinel,
15 Mar. 2026
-
My siblings and friends became an adolescent Image Ten, everyone contributing (poorly but enthusiastically) in front of and behind the camera.—
Literary Hub,
Literary Hub,
13 Mar. 2026
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 22 Mar. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
