It'll be a pleasure is an expression used to indicate that one is happy to do something. It is often used as a polite response when someone asks for a favor. The crossword solutions for this phrase are ITLL (4 letters), ITD (3 letters), and SPP (3 letters). ITLL stands for 'it will, ' ITD stands for 'it would, ' and SPP stands for 'surely please.' Together, these three solutions form the phrase 'it'll, it'd, surely please' which is another way of saying 'it'll be a pleasure.'