newborn

nouns

a baby from birth to four weeks
neonate, newborn, newborn baby, newborn infant

adjectives

recently born
"a newborn infant"
newborn
is similar to
(used of living things especially persons) in an early period of life or development or growth
"young people"
immature, young
having just or recently arisen or come into existence
"new nations"; "with newborn fears"
new-sprung, newborn