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verb

foster

/ˈfɒstər/  ·  say it: FOS·ter

to encourage the development of

In Sophisticated Everyday

In more detail

1. (verb) to encourage or help the growth or development of something

2. (verb) to care for a child who is not your own, usually temporarily, without officially adopting them

3. (adjective) relating to caring for a child who is not your own

Examples

How to use foster

As a verb meaning to encourage development, 'foster' is more formal and literary than 'encourage' and suggests creating conditions for gradual growth over time. In child-care contexts, it is the standard term for temporary care arrangements in the social services system. The meaning of development is common in formal or institutional writing (policy documents, academic work), while the child-care sense is universal.

Common phrases

Synonyms

encourage · promote · nurture · cultivate · advance

Opposites

discourage · hinder · suppress

Word family

fosterage (noun) · fostered (adjective/verb past) · fostering (noun/gerund)

A common mistake

Learners sometimes confuse 'foster' (temporary care without adoption) with 'adopt' (permanent legal assumption of parental role). Do not use 'foster' when you mean permanent adoption.

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