Bit by bit refers to the gradual, incremental progress of something. Here are some synonyms for this phrase:
1. Gradually - This adverb refers to the slow and steady progress of something over time.
2. Step by step - This phrase emphasizes the importance of taking things one at a time and following a set process or plan.
3. Piece by piece - This phrase emphasizes the idea of breaking something down into smaller, more manageable tasks or pieces.
4. Inch by inch - This phrase emphasizes the idea of making progress through persistence and determination, even if it is slow.
5. Slowly but surely - This phrase emphasizes the idea that progress is being made, even if it is not happening quickly.