Heavily | Definition of heavily by Merriam-Webster

Full Definition of HEAVILY

1

: to a great degree : severely

2

: slowly and laboriously : dully

3

archaic : with sorrow : grievously

4

: in a heavy manner

See heavily defined for English-language learners

before 12th century

Synonyms: achingly, almighty, archly, awful, awfully, badly, beastly, blisteringly, bone, colossally, corking, cracking, damn, damned, dang, deadly, desperately, eminently, enormously, especially, ever, exceedingly (also exceeding), extra, extremely, fabulously, fantastically, far, fiercely, filthy, frightfully, full, greatly, very, highly, hugely, immensely, incredibly, intensely, jolly, majorly, mightily, mighty, monstrous [chiefly dialect], mortally, most, much, particularly, passing, rattling, real, really, right, roaring, roaringly, seriously, severely, so, sore, sorely, spanking, specially, stinking, such, super, supremely, surpassingly, terribly, that, thumping, too, unco, uncommonly, vastly, vitally, way, whacking, wicked, wildly

1

: with or as if with weight <Bear down heavily on your pen.>

2

: in a slow and difficult way <He's breathing heavily.>

3

: very much <The house was heavily damaged.>

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