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"adopt" is also used as a crossword clue. If that's what you saw, the answer is often espouse (7 letters).
Definitions
take into one's family
Word origin
From Middle French adopter, from Latin adoptō; ad + optō (“to choose, desire”), equivalent to ad- + opt.
Used in a sentence
“A friend of mine recently adopted a Chinese baby girl found on the streets of Beijing.”
“We're going to adopt a Dalmatian.”
“We adopted an elephant at the local zoo.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Choose to use”5 letters
02“Take as one's own”5 letters
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