The phrase "horn of plenty" refers to an ancient symbol of abundance and prosperity, commonly represented as a cornucopia overflowing with fruits and vegetables. The term "horn-plenty" is a creative way of describing an excessive quantity or abundance of something, such as food, money, or other resources. Some potential synonyms for "horn-plenty" might include "plentiful", "abundant", "bountiful", "prolific", "copious", or "overflowing". Each of these words can convey a sense of plenty or excess, depending on the context and the speaker's intent. Whether used in a positive or negative sense, "horn-plenty" is a colorful expression that can add humor and depth to any conversation.