aggressor synonyms:
noun
assailant, attacker, belligerent, instigator, invader.
aggressor meaning: a person or country that starts an argument, fight, or war by attacking first
Example:
Ben Stokes ‘was main aggressor in nightclub fight’
While some see the US as the aggressor in the trade war with China, Mr Solomon has sympathy with Donald Trump’s ambitions to reset the rules.