Middle English word reweliche comes from Old English hreow (Grief. Repentance.), Old English hrēow, Old English -līc

Detailed word origin of reweliche

Dictionary entry	Language	Definition
hreow	Old English (ang)	Grief. Repentance.
hrēow	Old English (ang)
-līc	Old English (ang)
hrēowlīċ	Old English (ang)
hreowlic	Old English (ang)	Grievous, pitiful, sad, wretched, cruel, lamentable, hapless, miserable.
rewly	Middle English (enm)

Words with the same origin as reweliche