Which phonetic term is used for the letter 'D'?

The phonetic term used for the letter 'D' is "Delta." This term is part of the NATO phonetic alphabet, which assigns code words to the 26 letters of the English alphabet to ensure clarity and precision in verbal communication, especially in radio transmissions and situations where miscommunication can occur. "Delta" is easily distinguishable and helps avoid confusion with similar-sounding letters. Using a standardized phonetic alphabet is essential in customer service roles, such as a Spirit Airlines Customer Service Agent, to clearly communicate information, especially when spelling names or important details over the phone.