exactor

adjective

1. characterized by, requiring, or capable of accuracy of detail; very accurate; methodical; correct: an exact science
2. not deviating in form or content; without variation; precise: an exact replica
3. being the very (one specified or understood): the exact spot where I put it
4. strict; severe; rigorous: an exact disciplinarian

Origin: L exactus < pp. of exigere, to drive out, measure, determine < ex-, out + agere, to do: see act

transitive verb

1. to force payment of; extort: with from or of
2. to demand and get by authority or force; insist on: with from or of
3. to call for; make necessary; require

Origin: ME exacten