痴呆chīdāistupid; dull; (medicine) dementiaHSK 7-9PronunciationchīdāiExample sentence他小时候得过一场大病,从此变得有些痴呆。Tā xiǎoshíhou dé guò yī chǎng dà bìng, cóngcǐ biàn de yǒuxiē chīdāi.He had a serious illness as a child and has been somewhat mentally dull ever since.Read and choose an answerOne fixed sampleExplore a sample