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US
/ˌʌnəˈdʌltəreɪtɪdli/
UK
/ˌʌnəˈdʌltəreɪtɪdli/
See IPA manual
From unadulterated + -ly. Adulterate comes from Latin adulteratus, past participle of adulterare ('to corrupt, falsify'), from ad- ('to') + alter ('other').
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