The word "ADACM" is tricky to spell correctly because it contains a few rarely used sounds in English. The phonetic transcription of the word is /ˈædækəm/. The first sound, /æ/, is the "a" sound found in "cat." The second sound, /d/, is the "d" sound. The third sound, /æk/, is a combination of the "a" sound in "bat" and the "k" sound. The final sound, /əm/, is the sound at the end of "them." Overall, the spelling of ADACM requires careful attention to each sound to accurately convey the word.