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substantially

adverb

/səbˈstænʃəli/

Meaning

to a great extent or degree

The new policy has substantially improved working conditions.

considerably, significantly, greatly, largely

slightly, marginally

substantially increase, substantially reduce, substantially change, substantially improve

in a cheerful and joyful manner

in a new or recent manner

continuously over a period of time; always; without stopping

in a perfect manner; without flaws

beside; next to; together with

without preparation; spontaneously; improvised