When expressing grief or sorrow, the phrase "lamenting for" may be commonly used. However, there are several synonyms that can also convey a similar sentiment. For example, mourning, grieving, and weeping are all words that can replace "lamenting for." Alternatively, words such as bemoaning, bewailing, and keening can also be used to express deep sadness or mourning for someone or something. These words can add variety and depth to your writing and help to avoid repetition. By considering different synonyms and choosing the most appropriate word for your context, you can establish a strong emotional connection with your readers.