immature
adjective
im·ma·ture
ˌi-mə-ˈchu̇r 
-ˈtu̇r
-ˈtu̇r
-ˈtyu̇r
1
a
: exhibiting less than an expected degree of maturity
emotionally immature adults
b
: lacking complete growth, differentiation, or development
immature fruits
a sexually immature bird
c
: having the potential capacity to attain a definitive form or state : crude, unfinished
a vigorous but immature school of art
2
archaic
: premature
Examples of immature in a Sentence
The flock included both adult and immature birds.
His teachers have complained about his immature behavior.
Recent Examples on the Web
The three childlike siblings, who all wear thick black-rimmed Coke-bottled glasses and often speak in cartoonish unison, were previously a cost-saving embarrassment for the Chiefs, but their penchant for brawling and immature antics quickly garner the team popularity as ruthless heels.
—
Vikram Murthi, IndieWire, 19 Aug. 2025
Plus, Wendy and the hybrids are all children placed into adult robot bodies, resulting in adult actors acting like immature children, which can get grating.
—Dave Nemetz, TVLine, 6 Aug. 2025
That could mean users between 16 and 20 are especially susceptible to incorrect age estimations—with potential errors going both ways, perhaps labeling teens as adults or adults as teens—in addition to perhaps anyone whose viewing habits strike the system as immature.
—Ashley Belanger, ArsTechnica, 31 July 2025
The reliance on this pricing clause originated in the 1970s when LNG markets were immature and essentially an oligopoly.
—Michael Lynch, Forbes.com, 25 July 2025
See All Example Sentences for immature
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.
Vikram Murthi, IndieWire, 19 Aug. 2025
Plus, Wendy and the hybrids are all children placed into adult robot bodies, resulting in adult actors acting like immature children, which can get grating.
—Dave Nemetz, TVLine, 6 Aug. 2025
That could mean users between 16 and 20 are especially susceptible to incorrect age estimations—with potential errors going both ways, perhaps labeling teens as adults or adults as teens—in addition to perhaps anyone whose viewing habits strike the system as immature.
—Ashley Belanger, ArsTechnica, 31 July 2025
The reliance on this pricing clause originated in the 1970s when LNG markets were immature and essentially an oligopoly.
—Michael Lynch, Forbes.com, 25 July 2025
See All Example Sentences for immature
Cite this Entry
“Immature.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immature. Accessed 24 Aug. 2025.
Copy CitationKids Definition
immature
adjective
im·ma·ture
ˌim-ə-ˈt(y)u̇(ə)r
2
: showing less than an expected degree of maturity
immature behavior
immaturely
adverb
Love words? Need even more definitions?
Merriam-Webster unabridged
Share