The story
- Proto-Germanic · inherited from*rehtalīkê
- Proto-West Germanic · inherited from*rehtalīkā
- Old English · inherited fromrihtlīċe
- Middle English · inherited fromryȝtly
- English todayrightly
From Middle English ryȝtly, rihtliche, from Old English rihtlīċe, from Proto-West Germanic *rehtalīkā, *rehtalīkō, from Proto-Germanic *rehtalīkê, *rehtalīkô (“rightly”), equivalent to right + -ly. Cognate with West Frisian rjochtlik, Dutch rechtelijk, German rechtlich, Swedish rätteligen, Icelandic réttilega.
Etymology from Wiktionary, CC BY-SA 4.0.