Which word means to mimic; impersonate?

Which word means to smile, laugh, or contort the face in a manner that shows scorn or contempt?

Which word means a long, curved single-edged sword traditionally used by Japanese samurai?

Which word means a solid geometric figure generated by the revolution of a semicircle about its diameter; a round body whose surface is at all points equidistant from the center. Equation: x2 + y2 + z2 = r2?

Which word means highly excitable; unnaturally or acutely uneasy or apprehensive?

Which word means to make a deep, heavy, somewhat muffled, continuous sound, as thunder?

Which word means water that has been boiled with meat, fish, vegetables, or barley?

Which word means to remove or take off, as clothing?

Which word means a daring or bold resistance to authority or to any opposing force?