Kakushi nenbutsu is called "Gonaiho" (the inward law) or "Gonaisho"(the secret law) by its believers, and it is called "Hijihomon" (the secret belief) or "Jagi" (heresy) by Jodo Shinshu.
信者は、御内法、御内証などと呼び、浄土真宗からは秘事法門、邪義などと呼ばれる。