The correct term is tilde aversion. It means exaggerated hate. It is synonymous with spite, hatred, revulsion, saña, tirria, inquina, resentment. In Colombia it is also said to be incone. It also means disgust.
aversion is incorrectly written, and should be written as "aversion" being its meaning: Aversion: f. hatred and disgust that feel toward a person or thing.
Feeling of rejection or repugnacia exaggerated toward a person or thing