adoptivo
/adobˈtibo/ · B2 · adj
foster
👨👩👧 adoptivo = adopt + -ivo (adjective ending): adopt-ive, relating to adopting
Spanish adoptivo comes from Latin adoptivus, from adoptare (to choose for oneself). Drop the Spanish -ivo and add English -ive: adoptive. Padres adoptivos means adoptive or foster parents; hijo adoptivo is an adopted child.