The letter "p" is a common letter in the English language and has a variety of synonyms. One synonym for "p" is "pellet," which refers to a small, rounded piece of material. Another synonym is "pod," which refers to a casing or container, such as a plant pod. "Penny" is also a synonym for "p," which refers to the smallest coin in the UK currency. "Pulse" is another alternative, which refers to the rhythmic beating of the heart or the flow of blood. Finally, "particle" and "piece" are other synonyms for "p" that can refer to small fragments or components.