adjective🔗ShareNot officially established."the unofficial results of the ballot"governmentpoliticsorganizationChat with AIVocabulary GamePractice Reading
adjective🔗ShareNot acting with official authority."an unofficial adviser"governmentpoliticsChat with AIVocabulary GamePractice Reading
adjective🔗ShareNot listed in a national pharmacopeia etc."The new herbal supplement was unofficial, meaning it wasn't listed in the national pharmacopeia. "medicinetechnicalChat with AIVocabulary GamePractice Reading
