This is the 864th most frequent Spanish word.
asegurado
Insured.
Here, 'asegurado' is used in its reflexive form 'me he asegurado' to express the action of ensuring something has been done.
Me he asegurado de cerrar las ventanas antes de salir.
I have made sure to close the windows before leaving.
In this sentence, 'asegurado' describes the state of being insured or protected.
El paquete está asegurado contra daños durante el envío.
The package is insured against damage during shipment.
'Asegurada' here describes the state of being fastened or properly fixed.