Synonyms of greatly in English:

greatly


See definition of greatly

adverb

1‘a frantic training programme greatly increases the risk of injury’

SYNONYMS
very much, much, by a considerable amount, considerably, to a great extent, substantially, appreciably, significantly, markedly, sizeably, seriously, materially, signally, profoundly, to a great degree, to a great extent
enormously, vastly, immensely, tremendously, hugely, mightily, abundantly, extremely, exceedingly, remarkably
informal plenty, majorly, well, to the nth degree
informal, humorous bigly
ANTONYMS

slightly, not at all