There are several synonyms for the word "twelve" that can be used to describe the number. These include "a dozen," "a duodecad," "a twelvemo," and "twelvefold." "A dozen" is perhaps the most commonly used synonym, often used to describe 12 of something, such as eggs or donuts. "A duodecad" is a more formal synonym used in mathematical or scientific contexts, while "a twelvemo" is a literary term used to describe a book printed on sheets folded into twelve leaves, meaning 24 pages. "Twelvefold" is another synonym that signifies 12 times the original amount or quantity.