The phrase "socking it to one" is a colloquial expression that means to hit or strike someone, typically in a forceful manner. There are many synonyms that can be used to convey a similar meaning, such as pummel, batter, thrash, pound, wallop, clobber, and smack. Other options include beat, bludgeon, club, hammer, and assault. These words all imply an aggressive and forceful action, often with the intent to harm or overpower someone. While these synonyms may have slightly different connotations or nuances, they can all be used to effectively convey the idea of "socking it to one".