The verb perder (conjugation) means "to lose". The verb is irregular in the present tense. When conjugated, e changes to ie (with the exception of nostoros and vosotros).

Yo no pierdo mi dinero.
I don't lose my money.
No pierdes nada con preguntar.
You lose nothing by asking.
Juan pierde dinero a menudo.
John loses money often.
No perdemos.
We don't lose.
Siempre se me pierden las llaves.
I always lose the keys.
Yo perdí el dinero.
I lost the money.