heavily

slowly as if burdened by much weight

to a considerable degree

“he relied heavily on others' data”

indulging excessively

“he drank heavily”

in a heavy-footed manner

“he walked heavily up the three flights to his room”

with great force

“she hit her arm heavily against the wall”

in a manner designed for heavy duty

“a heavily constructed car”

in a labored manner

“he breathed heavily”