沉闷chénmènTop 25000Meanings1. oppressive (of weather)2. heavy3. depressed4. not happy5. (of sound) dull6. muffledCharacters used沉to submerge闷depressedExamples1这位zhèwèi老lǎo教授jiàoshòu的de讲座jiǎngzuò冗长rǒngcháng而ér沉闷chénmèn。The old professor's lectures are long-winded and ponderous.