Merriam-Webster Collegiate Dictionary - fulfill

 or fulfil  transitive verb  (~ed; ~ing)  Etymology: Middle English ~en, from Old English fullfyllan, from full + fyllan to fill  Date: before 12th century  1. archaic to make full ; fill her subtle, warm, and golden breath…~s him with beatitude — Alfred Tennyson  2.  a. to put into effect ; execute  b. to meet the requirements of (a business order)  c. to bring to an end  d. to measure up to ; satisfy  3.  a. to convert into reality  b. to develop the full potentialities of  Synonyms: see perform  • ~er noun