immature

1. Characteristic of a lack of maturity (synset 301495542)
   "immature behavior"
   similar to:

   • adolescent, jejune, juvenile, puerile - displaying or suggesting a lack of maturity
   • babyish - characteristic of a baby
   • childish, infantile - indicating a lack of maturity
2. (used of living things especially persons) in an early period of life or development or growth (synset 301651383)
   "young people"
   also:

   • immature - not yet mature
   • new - not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered
   • junior - younger; lower in rank; shorter in length of tenure or service
   tells us about: age - how long something has existed
   referred to in: animate thing, living thing - a living (or once living) entity
   similar to:

   • one-year-old - one year of age
   • two-year-old - two years of age
   • three-year-old - three years of age
   • four-year-old - four years of age
   • five-year-old - five years of age
   • adolescent, teen, teenage, teenaged - being of the age 13 through 19
   • infantile - being or befitting or characteristic of an infant
   • boyish, boylike, schoolboyish - befitting or characteristic of a young boy
   • childlike, childly - befitting a young child
   • early - very young
   • girlish, schoolgirlish - befitting or characteristic of a young girl
   • junior - including or intended for youthful persons
   • little, small - (of children and animals) young, immature
   • newborn - recently born
   • preadolescent, preteen - of or relating to or designed for children between the ages of 9 and 12
   • puppyish, puppylike - characteristic of a puppy
   • tender - young and immature
   • youngish - somewhat young
   • vernal, young, youthful - suggestive of youth; vigorous and fresh
   same as: young
3. Not fully developed or mature;
   Not ripe (synset 301497045)
   "unripe fruit"; "fried green tomatoes"; "green wood"
   similar to: unaged - not subjected to an aging process
   same as: green, unripe, unripened
4. Not yet mature (synset 301493085)
   also:

   • premature - born after a gestation period of less than the normal time
   • immature, young - (used of living things especially persons) in an early period of life or development or growth
   tells us about:

   • age - how long something has existed
   • matureness, maturity - state of being mature; full development
   similar to:

   • adolescent - in the state of development between puberty and maturity
   • embryologic, embryonal, embryonic - of an organism prior to birth or hatching
   • inceptive, inchoative - initial
   • larval - immature of its kind; especially being or characteristic of immature insects in the newly hatched wormlike feeding stage
   • prepubertal, prepubescent - (especially of human beings) at the age immediately before puberty; often marked by accelerated growth
   • prepupal - of an inactive stage in the development of some insects, between the larval and the pupal stages
   • pubescent - (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
   • pupal - of the insects in the chrysalis (cocoon) or post larval stage
   • underdeveloped - not yet fully developed
5. (of birds) not yet having developed feathers (synset 301100164)
   "a small unfledged sparrow on the window sill"
   similar to: unfeathered - not having feathers
   same as: unfledged

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