Definition of immature
1 archaic : premature
2a : lacking complete growth, differentiation, or development immature fruits a sexually immature birdb : having the potential capacity to attain a definitive form or state : crude, unfinished a vigorous but immature school of artc : exhibiting less than an expected degree of maturity emotionally immature adults
immaturityplay \ˌi-mə-ˈtu̇r-ə-tē, -ˈtyu̇r-, -ˈchu̇r-\ noun
Examples of immature in a Sentence
The flock included both adult and immature birds.
His teachers have complained about his immature behavior.
Recent Examples of immature from the Web
These immature sharks will be vital to understanding how great whites migrate in their early years.
Because the media are corrupt and Trump is immature, both sides must willingly blind themselves to the faults of their favorite characters.
Not many bands at Summerfest are calling out the immature guys listening to their music and telling them to just grow up.
In the distance, an immature bald eagle stood majestically on a large rock.
Adultification contributes to a false narrative that Black youths’ transgressions are intentional and malicious, instead of the result of immature decision-making—a key characteristic of childhood.
Tamir Rice, a boy of 12 in Cleveland, Ohio, shouldn't have been so immature as to play in a public with a pellet gun that looked like a more lethal weapon.
After exposing immature dendritic cells to αS for 48 hours, the team discovered that the more αS, the more dendritic cells were activated.
Other ads tried to depict Ossoff as an immature rich kid for dressing up as Han Solo in college.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'immature.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of immature
Latin immaturus, from in- + maturus mature
First Known Use: 1548See Words from the same year
IMMATURE Defined for English Language Learners
Definition of immature for English Language Learners
: not fully developed or grown
: acting in a childish way : having or showing a lack of emotional maturity
IMMATURE Defined for Kids
Definition of immature for Students
1 : not yet fully grown or ripe an immature bird immature fruit
2 : acting in or exhibiting a childish manner an immature teenager immature behavior
Seen and Heard
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