懂得
dǒngde · HSK 2
know
💡 懂 understand + 得 get = to grasp / truly know
懂 means to understand; 得 marks acquired ability or result. Together 懂得 = to have come to understand, to know how. The 得 suffix shifts plain 懂 from in-the-moment comprehension to settled, experienced knowing.
懂 — heart radical 忄 + 董 dǒng (phonetic)
懂 is a phono-semantic compound. The heart radical 忄 signals that the meaning relates to the mind or understanding, while 董 supplies the sound dǒng. It's a relatively late character used to mean 'to understand' or 'to comprehend,' i.e. to grasp something with the mind.
得 — 彳 (step) + 旦 (sun/day) + 寸 (hand)
Originally depicted a hand 寸 reaching for a cowrie shell 貝 (later simplified to 旦), with 彳 'step' added to show going out and obtaining something. The core meaning is 'to get' or 'obtain'. The reading děi extends this to 'must/have to' — what one is obliged to get done.