"PPS NO" is a commonly used phrase that stands for "Post Post Scriptum No". This term is typically used to add an additional thought at the end of a note or letter. However, if you want to express the same idea using different words, you can use synonyms such as "Additional Note", "Extra Information" or "Further Comment". These alternatives maintain the essence of a supplementary remark and can be equally effective in conveying the intended message. Ultimately, the choice of synonym depends on personal preference, writing style, and the context in which it is being used.