The word "swabby" has a few synonyms that can be used depending on the context of the sentence. For example, "swabber" is a more formal version of the word and can be used to refer to someone who cleans floors or decks. Another synonym is "mopper," which specifically refers to someone who uses a mop to clean. Additionally, "scrubber" can be used to refer to someone who cleans surfaces or objects with a scrub brush or sponge. Finally, "cleaner" is a more general synonym that can be used to refer to anyone who cleans, regardless of the tools or methods used.