gotten
From Longman Dictionary of Contemporary Englishgottengot‧ten /ˈɡɒtn $ ˈɡɑːtn/ verb American English the past participle of get → ill-gotten gains• In American English, gotten is the usual past participle of get: I’d gotten an A on the test.They have gotten divorced.• In British English, the past participle of get is got: I had got a letter from my sister in Australia.