Despite his flaws, she viewed his actions charitably.

charitably 是形容词 charitable 的副词形式，由名词 charity（慈善、宽容）加上形容词后缀 -able 构成形容词 charitable（仁慈的、宽容的），再加上副词后缀 -ly 构成副词 charitably（仁慈地、宽容地）。