1. In a gradual manner
   - gradually, bit by bit 
2. Proceeding in steps
   - stepwise

1. One thing at a time
   - bit-by-bit, in small stages, piecemeal, stepwise

See also: gradual

Encyclopedia: Step by step

• determinator
• determine
• determined
• determinedly
• determiner
• determining
• determining factor
• determinism
• determinist
• deterministic
• deterrence
• deterrent
• deterrent example
• detersive
• detest
• detestable
• detestably
• detestation
• detested
• dethaw
• dethrone
• virtuousness
• virucidal
• virucide
• virulence