笃[dǔ] 基本解释：
新英汉大词典：
- 笃[dǔ]
- 形容词- （忠实; 一心一意） sincere; earnest:
sincere conduct;笃行
tenacious of purpose笃志
- （病势沉重） (of an illness) serious; critical:be dangerously ill; be in a critical condition; be terminally ill病笃
以上内容来源于：《新汉英大辞典》
例句与用法：
Mr Wang is in the good graces of the governor, and is often invited to dine with him.
笃的其他解释: