- Foster is defined as to promote or encourage or to raise a child who is not one's biological or adoptive child.
- An example of foster is to help a new company campaign grow.
- An example of foster is to take in a child from an orphanage until permanent parents adopt him.
- to bring up with care; rear
- to help to grow or develop; stimulate; promote: to foster discontent
- to cling to in one's mind; cherish: foster a hope
Origin of fosterMiddle English fostren ; from Old English fostrian, to nourish, bring up ; from fostor, food, nourishment ; from base of foda, food
- having the standing of a specified member of the family, though not by birth or adoption, and giving, receiving, or sharing the care appropriate to that standing: foster parent, foster brother
- designating or relating to such care
- Foster, Stephen Collins 1826-64; U.S. composer of songs
- Foster, William Z(ebulon) 1881-1964; U.S. Communist Party leader
transitive verbfos·tered, fos·ter·ing, fos·ters
- To bring up; nurture: bear and foster offspring. See Synonyms at nurture.
- To promote the growth and development of; cultivate: detect and foster artistic talent. See Synonyms at advance.
- To nurse; cherish: foster a secret hope.
- Providing parental care and nurture to children not related through legal or blood ties: foster parents; foster grandparents; a foster home.
- Receiving parental care and nurture from those not related to one through legal or blood ties: foster children.
Origin of fosterMiddle English fostren, from Old English *fōstrian, to nourish, from fōstor, food, nourishing; see pā- in Indo-European roots.
(countable and uncountable, plural fosters)
(third-person singular simple present fosters, present participle fostering, simple past and past participle fostered)
Old English fostor (“food, sustenance”), from Proto-Germanic *fustrą.