Merriam-Webster Collegiate Dictionary - feat

 I. noun  Etymology: Middle English fait, fet, from Anglo-French, from Latin factum, from neuter of factus, past participle of facere to make, do — more at do  Date: 14th century  1. act, deed  2.  a. a deed notable especially for courage  b. an act or product of skill, endurance, or ingenuity Synonyms:  ~, exploit, achievement mean a remarkable deed. ~ implies strength or dexterity or daring an acrobatic ~. exploit suggests an adventurous or heroic act his exploits as a spy. achievement implies hard-won success in the face of difficulty or opposition her achievements as a chemist.  II. adjective  Etymology: Middle English fete, fayt, from Anglo-French fait, past participle of faire  Date: 15th century  1. archaic becoming, neat  2. archaic smart, dexterous