Which word is associated with the letter 'R' in the phonetic alphabet?

The word associated with the letter 'R' in the phonetic alphabet is 'Romeo.' The phonetic alphabet, or NATO phonetic alphabet, is used in military and aviation communications to ensure clarity and prevent misunderstandings when spelling out words over radio or telephone. Each letter of the alphabet is represented by a specific word to assist in accurate communication, especially in noisy environments.

'Romeo' is the standardized representation for the letter 'R,' making it the correct choice. This phonetic system helps to avoid confusion that can arise from similar-sounding letters or those that may sound different depending on the speaker's accent or voice clarity. In this context, the associations of other terms like 'Ranger,' 'Rocket,' or 'River' are not standard representations for the letter 'R' in the phonetic alphabet, which is why they do not fulfill the requirement of the question.