The phrase "are painful" can evoke a variety of negative emotions and experiences. There are numerous synonyms that can be used to convey a similar sentiment. Some examples include "are agonizing," "are excruciating," "are torturous," "are harrowing," "are unbearable," "are traumatic," "are distressing," "are formidable," "are grueling," and "are heart-wrenching." Each of these words describes a different aspect of pain, ranging from physical discomfort to emotional hardship. By using powerful and specific synonyms, writers can create a more vivid and impactful description of difficult experiences.