Phrase
paid up
付清；按时付款；出钱
paid up is the past of pay up (irregular).
to pay all the money that is owed, usually in full or on time, especially when demanded or under pressure
- 1.
To pay in total a sum which is owed, especially when the sum has been owed for a period of time.
偿还全部欠款,尤其是拖欠一段时间的款项。
缴清（股款）；缴付；偿还全部欠款,尤其是拖欠一段时间的款项。；全部付清；按时付款
In use
The landlord said we must pay up the rent by Friday or leave the apartment.
After months of reminders, he finally paid up the money he owed me.
The company is paying up all its debts before the end of the year.
pay up (sth)
此模式中宾语可选，表示付清具体款项。
You need to pay up the rent by Friday.
你需要在周五前付清房租。
pay up to sb
常见于勒索或被迫付款场景，to引出收款人。
The kidnappers forced the family to pay up to them.
绑匪逼迫那家人付钱给他们。
pay up (reluctantly)
不及物用法，强调付清行为，常带副词描述态度。
He finally paid up after months of reminders.
在催促数月后，他终于不情愿地付清了。
Common mistakes
I will pay up for the meal.I will pay for the meal.
“pay up”特指付清欠款或应付的款项（尤其在被催逼时），而日常消费如付饭钱用“pay”即可，无需加“up”。
You need to pay up it by Friday.You need to pay it up by Friday.
“pay up”是及物短语动词，代词宾语必须放在动词和介词中间，即“pay it up”，不能放在后面。
Connections
Learner notes
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.