premature

adjectives

born after a gestation period of less than the normal time
"a premature infant"
is derived from
is derived from
antonym
see also
not yet mature
too soon or too hasty
"our condemnation of him was a bit previous"; "a premature judgment"
is derived from
uncommonly early or before the expected time
"illness led to his premature death"; "alcohol brought him to an untimely end"
is derived from