English word heavily comes from Old English (ca. 450-1100) hefig (Heavy. Important. Oppressive, serious.), Old English (ca. 450-1100) hefiġ, Old English (ca. 450-1100) -līċe

Detailed word origin of heavily

Dictionary entry	Language	Definition
hefig	Old English (ca. 450-1100) (ang)	Heavy. Important. Oppressive, serious.
hefiġ	Old English (ca. 450-1100) (ang)
-līċe	Old English (ca. 450-1100) (ang)
hefiġlīċe	Old English (ca. 450-1100) (ang)
hefiglice	Old English (ca. 450-1100) (ang)	Deeply, intensely, vehemently.. Heavily, grievously, sluggishly, dully, with grief, displeasure, or anger.
hevyliche	Middle English (1100-1500) (enm)
heavily	English (eng)	In a heavy manner.. In a laboured manner.. In a manner designed for heavy duty.. So as to be thick or heavy.. To a considerable degree, to a great extent.. With a great weight.

Words with the same origin as heavily