heavily

As an adverb heavily

is in a heavy manner.

As an adjective undefined is

lacking a definition or value.

As adverbs the difference between rapidly and heavily

is that rapidly is with speed; in a rapid manner while heavily is in a heavy manner.

Heavily is a related term of vigorously.

As adverbs the difference between heavily and vigorously

is that heavily is in a heavy manner while vigorously is with intense energy, force or vigor.

As adverbs the difference between heavily and extremely

is that heavily is in a heavy manner while extremely is (degree) to an extreme degree.

As adverbs the difference between grossly and heavily

is that grossly is in a gross manner; without delicacy while heavily is in a heavy manner.

As adverbs the difference between heavily and strictly

is that heavily is in a heavy manner while strictly is in a strict manner.

As adverbs the difference between heavily and carefully

is that heavily is in a heavy manner while carefully is (lb) sorrowfully.

As an adverb heavily

is in a heavy manner.

As an adjective complicated is

difficult or convoluted.

As a verb complicated is

(complicate).

As adverbs the difference between profoundly and heavily

is that profoundly is (manner) with depth, meaningfully while heavily is in a heavy manner.

As adverbs the difference between bitterly and heavily

is that bitterly is in a bitter manner while heavily is in a heavy manner.