Adverb
In a substantial manner; in substance; essentially.
Source: Webster's dictionaryI'm afraid the film was well over budget Source: Internet
painting the room white made it seem considerably (or substantially) larger Source: Internet
the house has fallen considerably in value Source: Internet
the price went up substantially Source: Internet
the house was substantially built Source: Internet
1960s The company expanded substantially throughout the 1960s, making millionaires of some long-suffering investors who had nursed the company through the slow research and development phase of the product. Source: Internet