General terms:
* Compassionate: implies a deep understanding and empathy for another's suffering.
* Merciful: suggests a willingness to forgive or show leniency, often motivated by pity.
* Pitiful: can be used to describe someone who inspires pity, but can also have a negative connotation of weakness.
More specific terms:
* Piteous: describes something that evokes pity, often through sadness or vulnerability.
* Sympathetic: implies a shared understanding and feeling of sorrow for another's situation.
* Tenderhearted: suggests a sensitivity to suffering and a desire to help.
The best word to use will depend on the specific context and the emotion you want to convey.