Śraddhā, real śraddhā means complete faith.
Lecture on SB 1.15.30 -- Los Angeles, December 8, 1973:
Everyone can attain that bhāva stage. There is process. This process is described by Rūpa Gosvāmī how to come to the bhāva stage. Bhāva stage means just prior to perfection. One must come to the bhāva stage, next stage is perfection. Next stage is full perfection. So how to come to this bhāva stage, that is Rūpa Gosvāmī has described, ādau śraddhā. First of all little faith. Just like many outsider also come here, "What these people are doing, these Kṛṣṇa consciousness men? So let us see." So śraddhā. That is called śraddhā. Śraddhā, real śraddhā means complete faith. That is described by Caitanya-caritāmṛta. Śraddhā-śabde viśvāsa kahe sudṛḍha niścaya (Cc. Madhya 22.62). One who has got this much faith, strong faith, that Kṛṣṇa is the Supreme Personality of Godhead, this faith, not flickering, firm faith, "Yes, Kṛṣṇa is the Supreme Personality..." That is called śraddhā. That is beginning of śraddhā. If you have got still doubt, then you have not come to the stage of śraddhā even. Superfluous. You may come, but when you actually believe that "Kṛṣṇa is the Supreme Personality of Godhead, and if I engage myself in Kṛṣṇa's service, I am perfect"—two things—that is śraddhā. And the more you increase this śraddhā you become advanced. The beginning is this śraddhā. Ādau śraddhā.