The word "acetaminophen" is pronounced as: In American English: /əˌsiː.t̬əˈmɪn.ə.fən/ ("uh-see-tuh-MIN-uh-fen") In British English: /əˌsiː.təˈmɪn.ə.fen/ ("uh-see-tuh-MIN-uh-fen") The stress is on the fourth syllable "min".