the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose n
2
exchange people temporarily to fulfill certain jobs and functions v
3
swing back and forth between two states or conditions v exchange people temporarily to fulfill certain jobs and functions v be an understudy or alternate for a role v reverse (a direction, attitude, or course of action) v do something in turns
4
anticipating with confidence of fulfillment
5
n the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose n a resource
