猜, cāi, to guess, to suspect.
Etymological explanations tell us that the radical on the left 犭, dog or wolf, means suspect like a dog or a wolf. 青 sometimes has the sense of black, it evokes the idea of someone who has a hidden secret. The original meaning was doubt, not to trust. Later, 猜 took on the meaning of guessing.
The connotation of doubt can be found in 猜疑, cāi yí, to suspect.
猜 = 犭+ 青 = suspect like a dog or a wolf + black, secret.
Articles on characters :
Radical arrow 矢
15 August 2020