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.
Origin and Etymology of immature
Latin immaturus, from in- + maturus mature
First Known Use: 1548
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
What made you want to look up immature? Please tell us where you read or heard it (including the quote, if possible).