little, slight
unfortunate
accidental
occasional
Freudian, verbal

make
She made a couple of unfortunate slips during the talk.

afford
His team cannot afford any slips.

a slip of the tongue
I didn't mean to say that—it was just a slip of the tongue.

rejection (esp. BrE)
He got fifty rejection slips before his novel was published.

betting, voting (both BrE)
permission (esp. AmE)
credit, credit-card, deposit
a bank deposit slip

pay, wage (both BrE)
blue (AmE,politics)
The Senator returns the blue slip with an indication whether he or she supports or opposes the nominee.

pink (= to say that sb must leave their job)
compliments (BrE)
He sent his cheque with a compliments slip.

sign
His father signed a permission slip for a school field trip.

give sb, hand sb
Thousands of workers were handed pink slips.

get, receive
return
Please detach and return the slip below.

on a/the slip
He wrote the address on a slip of paper.

a slip of paper