godan verb (-su), transitive verb
cry all night; weep the night away
Describes spending the entire night crying, often due to deep sorrow or emotional distress.
彼女は悲しい知らせを聞いて、一晩中泣き明かした。
She cried all night after hearing the sad news.
子供の頃、
When I was a child, I once cried all night after having a scary dream.