exact

adj. 1 accurate; correct in all details (exact description). 2 precise. v. 1 demand and enforce payment of (money etc.). 2 demand; insist on; require.  exactness n. [latin exigo exact- require]

a. Precisely agreeing with a standard, a fact, or the truth; perfectly conforming; neither exceeding nor falling short in any respect; true; correct; precise; as, the clock keeps exact time; he paid the exact debt; an exact copy of a letter; exact accounts.