The phrase "fighting-words" refers to any words or insults that are intended to provoke a physical altercation. Synonyms for fighting-words include epithets, slurs, abuse, insults, provocation, and taunts. These words are often used to create conflict and incite anger and aggression in others. They can be hurtful and harmful, and are often used in heated or stressful situations. Other synonyms for fighting-words might include inflammatory language, aggressive rhetoric, or incendiary speech. It is important to remember that words have power, and that using language to incite violence or aggression can have serious consequences.