Definition: (of birds) not yet having developed feathers
Usage: a small unfledged sparrow on the window sill
Synonyms: immature
Definition: not yet mature
Similar words: adolescent
Definition: in the state of development between puberty and maturity
Usage: adolescent boys and girls
Similar words: embryologic, embryonal, embryonic
Definition: of an organism prior to birth or hatching
Usage: in the embryonic stage; embryologic development
Similar words: inchoative
Definition: beginning to develop
Usage: inchoative stages
Similar words: larval
Definition: immature of its kind; especially being or characteristic of immature insects in the newly hatched wormlike feeding stage
Usage: larval societies; larval crayfishes; the larval stage
Similar words: prepubertal, prepubescent
Definition: (especially of human beings) at the age immediately before puberty; often marked by accelerated growth
Similar words: prepupal
Definition: of an inactive stage in the development of some insects, between the larval and the pupal stages
Usage: the prepupal stage
Similar words: pubescent
Definition: (of animals especially human beings) having arrived at the onset of puberty (the age at which sex glands become functional) but not yet fully mature
Usage: the budding breasts of a pubescent girl and the downy chin of pubescent boy
Similar words: pupal
Definition: of the insects in the chrysalis (cocoon) or post larval stage
Usage: the pupal stage
Similar words: underdeveloped
Definition: not yet fully developed
Synonyms: immature
Definition: characteristic of a lack of maturity
Usage: immature behavior
Similar words: puerile, adolescent, jejune, juvenile
Definition: displaying or suggesting a lack of maturity
Usage: adolescent insecurity; jejune responses to our problems; their behavior was juvenile; puerile jokes
Similar words: babyish
Definition: characteristic of a baby
Usage: babyish tears and petulance
Similar words: childish, infantile
Definition: indicating a lack of maturity
Usage: childish tantrums; infantile behavior
Synonyms: immature, green, unripe, unripened
Definition: not fully developed or mature; not ripe
Usage: unripe fruit; fried green tomatoes; green wood
Similar words: unaged
Definition: not subjected to an aging process
Usage: vodka is an unaged liquor from Russia
Definition: (used of living things especially persons) in an early period of life or development or growth
Usage: young people
Similar words: one-year-old
Definition: one year of age
Similar words: two-year-old
Definition: two years of age
Similar words: three-year-old
Definition: three years of age
Similar words: four-year-old
Definition: four years of age
Similar words: five-year-old
Definition: five years of age
Similar words: teen, teenage, teenaged, adolescent
Definition: being of the age 13 through 19
Usage: teenage mothers; the teen years
Similar words: infantile
Definition: being or befitting or characteristic of an infant
Usage: infantile games
Similar words: boyish, boylike, schoolboyish
Definition: befitting or characteristic of a young boy
Usage: a boyish grin; schoolboyish pranks
Similar words: childlike, childly
Definition: befitting a young child
Usage: childlike charm
Similar words: early
Definition: very young
Usage: at an early age
Similar words: girlish, schoolgirlish
Definition: befitting or characteristic of a young girl
Usage: girlish charm; a dress too schoolgirlish for office wear
Similar words: junior
Definition: including or intended for youthful persons
Usage: a junior sports league; junior fashions
Definition: (of children and animals) young, immature
Usage: what a big little boy you are; small children
Similar words: newborn
Definition: recently born
Usage: a newborn infant
Similar words: preadolescent, preteen
Definition: of or relating to or designed for children between the ages of 9 and 12
Usage: a preteen party; preteen clothing
Similar words: puppyish, puppylike
Definition: characteristic of a puppy
Similar words: tender
Definition: young and immature
Usage: at a tender age
Similar words: youngish
Definition: somewhat young
Similar words: youthful, young, vernal
Definition: suggestive of youth; vigorous and fresh
Usage: he is young for his age