However, this theory is denied by a folklorist named Kunio YANAGIDA, who stated the theory in which the terms originated from the monster appearing as it said "I'm going to bite you" ("kamo-zo" in Japanese, which developed into the above-mentioned terms under the influence of dialect, etc.).
しかし民俗学者・柳田國男はこの説を否定し、化け物が「咬もうぞ」と言いながら現れることが起因するとの説を唱えている。