fostered Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to promote the growth of; to encourage;adjective. giving or receiving care in a family that is not related by birth or adoption. Example Sentence She fostered the child's talents. Synonyms nourish; promote; provoke; cultivate Antonyms neglect Hear It! Say It! Write It! fostered Switch to cursive Start Share with your friends: