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Definition of foster

foster

/ˈfɔː.stɚ/
fos · ter
Past Simple:fostered
•
Past Participle:fostered
•
Present Participle:fostering
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foster Lexical Profile

foster Game Scores & Validity

• verb

1

To encourage or promote the development of something (typically something good or beneficial).

Example

"The teacher tried to foster a sense of curiosity and collaboration among her students."

2

To bring up a child that is not one's own by birth, usually for a temporary period through an official agency.

Example

"The couple decided to foster children before considering permanent adoption."

Synonyms
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Antonyms
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• adjective

1

Sharing, providing, or receiving parental care and family upbringing without being related by blood or legal adoption.

Example

"The children quickly bonded with their compassionate foster parents."

Synonyms
View all synonyms for foster
Antonyms
View all antonyms for foster

• Rhymes for foster

• Nearby Words

fossil
fossilization
fossilize
foster
fothergilla
foul
fouling

Word Origin & Etymology

From Old English 'fōstrian' (to supply with food, nourish, or support), derived from 'fōstor' (food or nourishment), sharing an ancient Germanic root with the word 'food'.

Cite this Entry

Wordmom. (2026). Definition of Foster. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/foster
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