How to write 笃

笃 dǔ 1. 忠实，一心一意。 Sincere, single-minded. 2. 厚实，结实。 Thick, sturdy. 3. 病沉重。 Serious illness. 1. 忠实，一心一意：～学。～信。～志。～情。～厚。 Sincere, single-minded: faithful to learning; sincere in faith; steadfast in ambition; sincere in feelings; thick-hearted. 2. 厚实，结实：“彼其之子，硕大且～”。 Thick and sturdy: "That child of his is large and sturdy." 3. 病沉重：病～。 Serious illness: the illness is serious. 笃 dǔ 形 (Adjective) 【本义】:马行迟顿 [Original meaning]: (of a horse) slow in gait. 【造字法】:形声。从马，竹声。 [Character formation]: A phonetic and semantic combination; includes the character for horse and the sound from bamboo. 1. 同本义 ([En.] (of horse) slow). Same as original meaning (of horse) slow. 引 1. 《说文》：笃，马行顿迟也。 "Shuowen Jiezi": Dun (笃) refers to a horse moving slowly. 2. 《后汉书·先武纪》：笃癃无家属。 注引《尔雅》曰:“笃，困也。” "Book of the Later Han": "suffering from a serious illness; with no family to support him." Note: "Dun" (笃) means to be troubled. 例 又如:笃么(笃笃末末，笃笃寞寞。转来转去，徘徊不前) Example: As in: "Dun me" (笃么); indicates hesitance or indecision. 2. 忠实，不虚伪 ([En.] sincere). Sincere, not hypocritical. 引 1. 《吕氏春秋·孝行》：朋友不笃，非孝也。 "Lüshi Chunqiu": "A friend who is not sincere is not filial." 2. 《礼记·中庸》：慎思之，明辨之，笃行之。 "The Doctrine of the Mean": "Think carefully, discern clearly, and act sincerely." 例 又如:笃人(忠实厚道的人);笃仁(笃实而仁厚);笃亮(笃实亮直);笃美(笃实美善)。 Example: Also as: a sincere person; sincere and kind; straightforward and sincere; genuinely virtuous. 3. ([En.] 病势)沉重 ([En.] serious). Serious condition (of illness). 引 1. 《三国志·诸葛亮传》：孙权病笃。 "Records of the Three Kingdoms": "Sun Quan was gravely ill." 例 又如:笃疾(疾病沉危);笃剧(指病情沉重危急)。 Example: Also as: serious illness; critical condition of sickness. 4. 厚 ([En.] thick). Thick. 引 1. 《尔雅·释诂》：笃，厚也。 "Erya": "Dun (笃) means thick." 2. 《诗·唐风·椒聊》：硕大且笃。 "Poetry Book": "Large and thick." 5. 专一 ([En.] single-minded). Single-minded. 例 如:笃慎(专心谨慎);笃向(专诚向往)。 Example: For instance: sincere caution; single-minded pursuit. 6. 切实;确凿 ([En.] reliable; true). Reliable; true. 引 1. 《论语·先进》：论笃是与，君子者乎? "Analects": "Is a gentleman one who speaks reliably?" 例 又如:笃论(确当的言论);笃见(确切的见解)。 Example: Also as: reliable discourse; precise perspective. 7. 丰厚 ([En.] rich and generous). Rich and generous. 例 如:笃生(上天独厚于其人)。 Example: For example: blessed by heaven. 8. 〈方〉安稳;确定 ([En.] stable). Stable; certain. 例 如:笃悠悠。 Example: For instance: steady and calm. 9. 深厚 ([En.] deep). Deep. 引 1. 唐· 柳宗元《答韦中立论师道书》：仆道不笃，业甚浅近。 "Tang Dynasty, Liu Zongyuan": "My way is not deep; my knowledge is shallow." 例 又如:笃好(交情深厚);笃正(纯厚正直)。 Example: Again: deep friendship; genuine moral integrity. 笃 dǔ 象 ——象声词。如:笃笃(象声词，马蹄声);笃笃笃(和尚念经时的木鱼敲击声)。 [Onomatopoeia]: Examples: "Dun dun" (sounds of horse hooves); "dun dun dun" (the sound of a monk striking a wooden fish while chanting). 笃 dǔ 副 (Adverb) 甚;深 (【英】：very). Very. 如:笃好斯文;笃念旧思;笃重(十分严重);笃孝(十分孝顺)。 Such as: very fond of literature; very nostalgic; very serious; very filial piety.