Free from error
correct, exact, right, precise, infallible, perfect, nice,
faultless, flawless, errorless, just, factual, true, unquestionable,
veracious, unquestioned, unerring, unimpeachable, authoritative,
authentic, valid, undisputed, undeniable, unrefuted,
irrefutable, conclusive, absolute, final, certain, unambiguous,
straight, proper, strict, undeviating, not amiss,
definite, actual, definitive, fundamental, clear-cut, genuine,
official, OK, checked and double-checked*, dead right*, on target*, on the nose*, on the button*, on the money*, right on*; see also sense 2.
Antonyms erroneous, false*, questionable.
Characterized by precision
careful, meticulous, precise, deft, reliable, trustworthy, true, correct, exact, well-defined,
specific, dependable, skillful, methodical, systematic,
discriminative, nice, distinct, particular, well-drawn,
realistic, authentic, genuine, close, critical,
detailed, factual, severe, rigorous, literal, word-for-word, rigid, scrupulous,
strict, exacting, punctilious, discriminating, faithful,
punctual, scientific, objective, detached, unprejudiced,
unbiased, disinterested, veracious, matter-of-fact, rational,
unmistakable, reasonable, judicious, right, explicit,
mathematically precise, mathematically exact, ultraprecise, definite, religiously exact, unerring,
concrete, defined, sharp, sound, solid, like clockwork, on the spot*, on the dot*.
Antonyms inaccurate, careless*, faulty.