Scoffer (noun)

1. A person who expresses contempt or ridicule through words or actions.
2. A person who openly mocks or derides something or someone.

Origin:

From the old french escoufier, from escoufer, meaning to spit out, or to mock.

Examples:

1. He was a scoffer who never took anything seriously.
2. The scoffer laughed at the idea of going to college.
3. He was known to be a scoffer who would mock people for their beliefs.
4. The scoffer made fun of the new employee's ideas.
5. The scoffer expressed his contempt for the new policy with a sneer.