1. most important; chief   principle   principal   2. to indulge in an evil act   perpetrate   perpetuate   3. the link across necks of pair of oxen pulling cart or plough   yoke   yolk   4. to continue; to go forward   precede   proceed   5. a general rule, belief or truth   principle   principal   6. writing or typing materials   stationary   stationery   7. an extra benefit; an additional privilege   prerequisite   perquisite