Green’s Dictionary of Slang

ickyness n.

also ickiness
[icky adj. (3)]

(US teen) disgust.

[UK]N. Cohn Awopbop. (1970) 24: He [...] loved his mother to the point of ickiness.
[US]A. Heckerling Clueless [film script] I had an overwhelming sense of ickyness. Even though I apologized to Lucy, something was still plaguing me.