The term 'PARTY TYPE' can be broken down into two crossword solutions: STAG (4 letters) and SURPRISE (8 letters). A STAG party is a type of gathering where only men are invited, usually to celebrate a bachelor's last night of freedom before marriage. A SURPRISE party is a type of gathering where the guest of honor is unaware of the event until they arrive, and is usually thrown by friends or family to celebrate a special occasion.