There are many synonyms that can be used instead of the phrase "full hate". Some common ones include extreme dislike, absolute loathing, intense animosity, unbridled rage, passionate detestation, vehement abhorrence, and intense antipathy. These words all carry a strong emotional connotation and express a deep-seated feeling of negativity towards something or someone. When using these words, it is important to be mindful of their intensity and potential impact on those around you. While it is okay to express your emotions, it is important to do so in a way that is respectful and empathetic towards others.