'Sock it to' is an idiomatic phrase that means to hit or strike someone very hard. The term 'sock' actually refers to the verb 'to punch.' There are several synonyms that can be used for 'sock it to,' such as 'pummel,' 'beat,' 'thrash,' 'whip,' 'maul,' 'wallop,' 'pound,' and 'lay into.' These words are often used interchangeably with 'sock it to' in order to convey the message of hitting or striking someone with great force. When using any of these synonyms, it is important to use them in context so that the meaning is clear.