形容词

1. 无偿的；没有薪水的
If you do unpaid work or are an unpaid worker, you do a job without receiving any money for it.

2. 未缴纳的；未付清的；还未付款的
Unpaid taxes or bills, for example, are bills or taxes which have not been paid yet.

1. not paid

e.g. unpaid wages
an unpaid bill

2. engaged in as a pastime

e.g. an amateur painter
gained valuable experience in amateur theatricals
recreational golfers
reading matter that is both recreational and mentally stimulating
unpaid extras in the documentary

Synonym: amateurrecreational

3. without payment

e.g. the soup kitchen was run primarily by unpaid helpers
a volunteer fire department

Synonym: volunteer(a)