Read the following text and choose the correct answer.

Source: zalora.co.id

Bella loses her wallet when she wants to pay the bill in the restaurant. She looks for it in her bag, but she can’t find it. Then, she asks the security officer about it. The security officer asks her to describe her wallet. Here is the description.

It is made of leather. It has black color and a rectangular shape. There is a brand name “Coccinelle" on the front flap. The wallet has two compartments for banknotes and ten card slots. Inside her wallet are a sum of money, around Rp 5,000,000,00, her credit cards, and ID card. She also keeps her photo in it.

Fortunately, the security officer keeps Bella’s wallet and Bella thanks him for it. He also reminds her to be careful next time.

"He also reminds her to be careful next time" (Paragraph 3)

The opposite meaning of the underlined word is ....