不 bù no; not so(bound form) not; un- Example sentences 我不吃牛肉。 wǒ bù chī niúròu. I do not eat beef 弟弟不把衣服挂在衣柜里。 dìdi bù bǎ yīfu guà zài yīguì lǐ. My little brother doesn't hang his clothes in the closet