This is the 9235th most frequent Spanish word.
aceptan
"Accept."
In this sentence, 'aceptan' is the third-person plural form of the verb 'aceptar', indicating that 'they' are performing the action of accepting.
Ellos aceptan las condiciones del acuerdo.
They accept the terms of the agreement.
Here, 'aceptan' is used in a question directed to a group in the second person plural, asking if 'you all' (formal) accept credit cards.
¿Aceptan ustedes tarjetas de crédito en este establecimiento?
Do you accept credit cards at this establishment?
In this usage, 'aceptan' illustrates an action performed by banks (third person plural subject), indicating that they do not take damaged bills.