This is the 936th most frequent Indonesian word.
ketat
"Tight" or "strict."
In this sentence, 'ketat' describes the strict and rigid enforcement of rules or measures at the airport.
Pengamanan di bandara sangat ketat sejak adanya peristiwa tersebut.
The security at the airport has been very tight since that incident.
Here, 'ketat' refers to the physical fitting of clothing being too snug for the person.
Celana jeans ini terlalu ketat untuk saya.
These jeans are too tight for me.
In this context, 'ketat' implies a strict or uncompromising structure of the academic schedule.