PSPS (also P.S. American English) /ˌpiː ˈes/ ●●○ noun [countable]TCM (postscript) a notewritten at the end of a letter, adding more information → PPSShe added a PS to say ‘hi’ to my brother.Best wishes, Julie. PS Maggie sends her love.From Longman Business DictionaryPSPS noun [countable]written abbreviation for POSTSCRIPT; written at the end of a letter when you want to add more information. You can add PPS if more information comes after the PSShe added a PS asking me to send her some money.Best wishes, Julie. PS If Thursday is not convenient, let me know. PPS You can reach me on email at the address below.