The term 'DISLIKE GREATLY' can be expressed in two words: HATE and ABHOR. HATE is a four-letter word that expresses strong dislike or animosity towards someone or something. It is often used to describe intense feelings of anger, hostility, and resentment. ABHOR is a five-letter word that expresses a strong feeling of disgust or revulsion. It is often used to describe an extreme aversion to something or someone. Both words are used to express a strong negative emotion towards something or someone.