Slacked is a word that can be used in several contexts, including when referring to a decrease in effort or progress, or when one is being negligent or lazy. However, in writing, using the same word repeatedly can be tiring and monotonous. Therefore, finding synonyms for the word slacked is essential to keep your writing engaging. Some synonyms for slacked include relaxed, eased off, slowed down, loosened up, decelerated, neglected, and idled. These synonyms can help you add variety and depth to your writing, so try them out the next time you need to use slacked in your work.