Truculence Synonyms: aggressiveness, belligerence
Truculence Sentence: His truculence was the reason behind their break-up.
Under The Lens: Difference between Truculence, Aggressiveness and Belligerence.
All these words suggest hostility and unprovoked offensiveness. Aggressiveness is the most general among these words. Belligerence and especially truculence are more formal substitutes for aggressiveness. Belligerence suggests war like hostility while truculence has overtones of contempt and open disregard