Definify.com
Webster 1913 Edition
Immature
1.
Not mature; unripe; not arrived at perfection of full development; crude; unfinished;
“An ill-measured and immature counsel.” as,
immature
fruit; immature
character; immature
plans. Bacon.
2.
Premature; untimely; too early;
as, an immature death
. [R.]
Jer. Taylor.
Webster 1828 Edition
Immature
IMMATU'RE
,Adj.
1.
Not mature or ripe; unripe; that has not arrived to a perfect state; applied to fruit.2.
Not perfect; not brought to a complete state; as immature plans or counsels.3.
Hasty; too early; that comes before the natural time.[In this sense, premature is generally used.]