sudrdha
sudṛḍha viśvāsī — possessing firm faith;
CC Adi 12.88
sudṛḍha — firm;
CC Adi 17.278
sudṛḍha — firm;
CC Madhya 22.62
kari' sudṛḍha viśvāsa — having firm faith in this conclusion;
CC Madhya 25.279
sudṛḍha — firm;
CC Antya 7.162