An altar agreement is a formal commitment between two people, usually in the form of a VOW. It is often made in a religious ceremony and is typically sealed with a kiss. The term 'altar agreement' is composed of four words: VOW (3 letters), IDO (3 letters), ARA (3 letters), and APSE (4 letters). VOW stands for a solemn promise or pledge, IDO stands for 'I do, ' ARA stands for an altar or sacred place, and APSE stands for a semicircular recess in a church.