without error
- flawlessEntirely without fault
- perfectWithout any flaw
- accurateConforming to fact
- preciseExactly correct, no error
- correctFree from error
immaculate · faultless · spotless · unblemished · impeccable · exactness · pristine · seamless · meticulous · unerring · infallible · foolproof · airtight · bulletproof · clean · polished · refined · surgical
accuracy/correctness
without errorfaulty
Having defects or errors
in error · errant · erroneously · erroneous · incorrectly
precision/exactness
without errorimprecisely
Without exactness
inexactly · approximately · roughly · sloppily · carelessly
reliability/consistency
without errorunreliably
Not to be counted on
erratically · inconsistently · unpredictably · sporadically · fitfully