1. in a way that expresses deep sorrow, grief, or sadness
She gazed mournfully out the window after hearing the news.
Ela olhava lamentavelmente pela janela depois de ouvir a notícia.
2. in a manner that conveys melancholy or lamentation
The violin played mournfully during the funeral ceremony.
O violino tocava de forma melancólica durante a cerimônia fúnebre.