やわyawaらげるrageru
1.

To make something calmer or more peaceful, transforming a tense or aggressive situation into one that is more tranquil and harmonious.

2.

To simplify or clarify a concept or expression, making it easier to understand or more accessible to others.

3.

To ease discomfort or agitation, providing relief from stress, anxiety, or irritation.

Example:

その薬は彼の苦痛を和らげた。