假 + 的 / 假 + Noun
假 (jiǎ) means "fake," "false," or "counterfeit" and is used to describe something that is not genuine or authentic. It can modify nouns directly (假的, 假货) and often appears in contexts involving deception or imitation. It is the opposite of 真 (real/true).
这个包是假的,不是正品。
Zhège bāo shì jiǎ de, bù shì zhèngpǐn.
This bag is fake; it's not genuine.
网上有很多假消息,大家要注意分辨。
Wǎng shàng yǒu hěn duō jiǎ xiāoxī, dàjiā yào zhùyì fēnbiàn.
There is a lot of fake news online; everyone should be careful to distinguish it.
他用了假名字注册了账号。
Tā yòng le jiǎ míngzì zhùcè le zhànghào.
He registered an account using a fake name.