The phrase 'in bits' is commonly used to express something that has been fragmented, broken or shattered into small pieces. There are several synonyms that can be used to convey the same meaning. One good option is 'broken apart', which captures the idea of something being divided into several fragments. Another alternative is 'crumbled', which suggests that the object has disintegrated into small pieces. 'Fragmented' is another synonym that could be used to describe something that has been separated into multiple smaller pieces. Other useful synonyms of 'in bits' include 'disassembled', 'shattered', 'splintered', 'separated', 'chopped', and 'dismantled.' Overall, these synonyms can be useful to describe the state of something that has been broken or shattered into smaller pieces.