This is the 4669th most frequent Dutch word.
eenmaal
"Eenmaal" means "once" in English.
Here, 'eenmaal' suggests a condition or a fixed point/time at which an action or state begins.
Als je eenmaal begint, kun je niet meer stoppen.
Once you start, you cannot stop anymore.
In this context, 'eenmaal' (here, 'eenmalig' as an adjective) denotes a singular occurrence of a specific event or transaction.
Dat kost slechts eenmalig tien euro.
That merely costs ten euros once.
In this sentence, 'eenmaal' is used as an adverb meaning 'once', indicating an action that has occurred a single time.