Synonyms for Accurate (same or very similar meaning)
WordNet sense 1 ((of ideas, images, representations, expressions) characterized by perfect conformity to fact or truth ; strictly correct):
exact, precise
WordNet sense 2 (free from error; especially conforming to fact or truth):
correct, right
WordNet sense 3 (precisely accurate):
veracious
WordNet sense 4 (accurately placed or thrown):
true
WordNet sense 5 (right; in keeping with the facts):
straight
WordNet sense 6 (marked by fidelity to an original):
close, faithful
From the ODE community, based on WordNet
add/edit