The correct spelling of the word "Attenuate" is often misspelled as "Attenuaut". The correct pronunciation of "attenuate" is /əˈtɛnjuˌeɪt/. Notice that the second syllable is pronounced as "nju" as in "new" and not "naut" as in "naughty". "Attenuate" means to weaken, reduce or make something thinner. It is a common word used in scientific fields, especially in medicine and biology. Correct spelling and pronunciation of words is important in communications, especially in professional settings.