Catnapper is a word used to describe someone who takes a short nap during the day. However, there are a few synonyms that can be used in place of this word to create variations in the language used. One such term is "power napper," which refers to someone who takes a short nap with the purpose of re-energizing themselves. Another synonym for "catnapper" is "siesta-taker," which highlights an individual's preference for taking a midday nap. "Afternoon napper" is another term that can be used to describe someone who takes a nap during the afternoon, while "daytime dozer" can be used to refer to someone who naps at any time during the day.