Sod all is a common British slang for "nothing at all" or "absolutely nothing". But there are several other synonyms that you can use to express the same sentiment. These include words like nil, zilch, zip, nada, squat, diddly-squat, and nothing. Each of these words is a great alternative to sod all and can be used depending on the context and the tone of the conversation. You can use them to express a lack of something or as a response to someone who asks you what you have been doing. No matter what word you choose, remember that they all convey the same meaning - "there is nothing".