pubescent

Adjective

• covered with fine soft hairs or down
  • downy milkweed seeds
    

• (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
  • the budding breasts of a pubescent girl and the downy chin of pubescent boy
    

Related words

• Synonyms: 
  downy , puberulent , sericeous