incrementally

/ˌɪŋkrəˈmɛntəli/
adverb
  1. In a gradual, step-by-step manner; one small amount at a time.
    • She saved money incrementally by putting aside a few dollars each week.
    • The temperature rose incrementally throughout the afternoon, reaching a high of 95 degrees.
    • The company improved its website incrementally, fixing one bug at a time.
Antonyms