to express sadness and feeling sorry about something

The poem opens by lamenting (over) the death of a young man. 这首诗的开篇表达了对一位青年之死的惋惜之情。

My grandmother, as usual, lamented the decline in moral standards in today's society. 和往常一样，我奶奶对当今社会世风日下深感痛惜。

The late lamented (= dead and remembered with love) Frank Giotto used to live here. 已故的受人爱戴的弗兰克‧焦托曾在此居住。

Synonyms: bemoan bewail

Compare: keen verb

a song, poem, or other piece of writing that expresses sadness about someone's death

The whole play can be interpreted as a lament for lost youth. 整部剧可以看作是一首青春的挽歌。