IPA: /ˈsɔːrəfəli/
KK: /ˈsɔroʊfəli/
In a way that shows sadness or regret.
She looked at him sorrowfully after hearing the bad news.
**Sorrowfully** → It is formed from "sorrow" (from Old English *sorg*, meaning grief or sadness) and "-fully" (meaning in a manner full of). The word "sorrowfully" means in a manner full of sorrow or grief.
Think of feeling 'full of grief' — 'sorrow' represents that deep sadness, and '-fully' indicates the manner in which one expresses it.
No commonly confused words.