<p><strong>Verb</strong></p><ul><li>(used with object) to promote the growth or development of; further; encourage: to foster new ideas.</li><li>Synonyms: instigate, foment, advance, forward, favor</li><li>Antonyms: discourage</li><li>to care for a foster child or a pet as a temporary guardian: The couple fostered two boys until they could be reunited with their birth parents.</li><li>Have you ever fostered a kitten that you just couldn’t part from afterwards?</li><li>Synonyms: maintain, support, sustain, nourish, nurse</li><li>to care for or cherish.</li><li>British: to place (a child) in a foster home.</li><li>Obsolete: to feed or nourish.</li></ul>