Synonyms of greatly in English:

greatly


See US English definition of greatly

See UK English definition of greatly

See Spanish definition of enormemente

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