"exacter" in the adjective sense
1. exact
marked by strict and particular and complete accordance with fact
"an exact mind"
"an exact copy"
"hit the exact center of the target"
2. accurate, exact, precise
of ideas, images, representations, expressions) characterized by perfect conformity to fact or truth strictly correct
"a precise image"
"a precise measurement"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License