prior
Definitions
Existing or coming before in time, order, or importance.
Denoting a belief or proposition arrived at without examination or experience.
Examples
You should have checked the prior arrangements before booking the flight.
The company requires prior approval from the manager for all travel expenses.
She had no prior experience in marketing, but she learned the job quickly.
Synonyms
previous earlier preceding former antecedent preliminary preparatory
Antonyms
subsequent following later succeeding ensuing posterior future