Word: 弟 (dì) 弟 dictionary entry dì younger brother; junior male; I (modest word in letter) Full dictionary entry for 弟 Example sentences using 弟 3 sentences, showing page 1 of 1. 她把我介绍给了她弟。 Tā bǎ wǒ jièshào gěi le tā dì. She introduced me to her brother. 我弟是医生。 Wǒ dì shì yīshēng. My brother is a doctor. 我弟觉得他比我强，但他才六岁。 Wǒ dì juéde tā bǐ wǒ qiáng, dàn tā cái liù suì. My brother thinks that he's stronger than me. But he's only six years old.