I didn’t know about the meeting beforehand.
How could she tell beforehand that I was going to go out?
The sea can be hazardous. Avoid a big meal beforehand.
She came an hour beforehand.
Some good research had been done beforehand.
beforehand (adverb, adjective): de antemano, con antelación, con anticipación, antes. If you do something beforehand, lo haces antes de un evento concreto. Antes de tiempo. Con previsión. Previamente.