A colloquial expression meaning to buy or finance something on credit or with borrowed money. So you do not pay immediately, but in installments or at a later point in time.
example
Er hat sich sein neues Auto auf Pump gekauft und muss es jetzt abbezahlen.
He bought his new car on credit and now has to pay it off.
Usage tips
Origin of the word
'Pump' comes from the colloquial use of the verb 'pumpen' (to lend/borrow money), which, besides its main meaning, can also mean 'to borrow money'. The expression 'auf Pump' (on credit) takes up this meaning.
EXAMPLE
Kannst du mir 20 Euro pumpen? Ich gebe sie dir morgen zurück.
Can you lend me 20 euros? I'll give it back to you tomorrow.
Fixed expression
The noun 'Pump' is used almost exclusively in the fixed expression 'auf Pump' (on credit). It describes buying or doing something without paying for it immediately.
EXAMPLE
Viele Leute leben heute auf Pump und machen Schulden.
Many people today live on credit and go into debt.
Colloquial style
The idiom 'auf Pump' (on credit) clearly belongs to colloquial language. It is used in everyday conversations, but not in formal situations such as a conversation at a bank.
EXAMPLE
Sollen wir den neuen Fernseher wirklich auf Pump kaufen?
Should we really buy the new TV on credit?
Compare with
near_synonym · confusable
Pump vs Finanzierung
financing
'Finanzierung' and 'auf Pump' can both mean that you do not pay for something in full right away. 'Finanzierung' is a neutral and general term for obtaining money, often for larger purchases or projects. 'Auf Pump' is colloquial and means that you buy something with borrowed money or on credit. It can sound slightly critical, as if someone is buying something even though the money is not available at the moment. Learners should note: you normally do not simply say 'der Pump' on its own, but use the phrase 'auf Pump' (on credit).
Pump
Sie kauft das teure Fahrrad nicht auf Pump, weil sie keine Schulden machen will.
She is not buying the expensive bicycle on credit because she does not want to go into debt.
Finanzierung
Für die Finanzierung der Küche hat er einen Kredit bei der Bank aufgenommen.