substantially

comparative more substantially · superlative most substantially

1. In a strong or substantial manner; considerably.

   For the first time since the Great Depression, median family income has fallen substantially over an entire decade. Income grew slowly through most of the last decade, except at the top of the distribution, before falling sharply when the financial crisis began.

   2012 October 23, David Leonhardt, “Standard of Living Is in the Shadows as Election Issue”, in The New York Times, archived from the original on 07 Aug 2020, retrieved 24 Oct 2012

   Synonyms: majorly, significantly

2. To a great extent; in essence; essentially.

   Synonyms: at heart

3. Without material qualifications.