Pain-filled is a combination of two words: pain and filled. It is used to describe someone or something that is filled with pain. There are many synonyms for the word pain-filled, including anguish-ridden, suffering, grief-stricken, agonizing, and tormented. Other synonyms may include hurtful, sorrowful, pained, and woeful. Additionally, you may also use words like miserable, wretched, or distressed to describe the same feeling. It is crucial to pick the right word to accurately describe how you or someone else is feeling. Therefore, it is essential to have a good understanding of the various synonyms and use them accordingly.