errorlessly
In perfect fashion
Without making any mistakes; in a manner free from error.
The word is rare and awkward—flawlessly, perfectly, or without error serve the same purpose more naturally.
She transcribed the document errorlessly works but sounds stilted compared to alternatives.
Without any defects
- impeccablyWithout any flaws
- faultlesslyWithout any defects
- immaculatelyIn perfect, unblemished manner
- perfectlyWithout any flaw
unblemished · spotlessly · pristinely · seamlessly · smoothly · cleanly · purely · wholly
In an exact manner
- exactlyWith total accuracy
- accuratelyIn a correct manner
- correctlyIn accurate manner
- meticulouslyWith extreme care
scrupulously · carefully · rigorously · methodically · systematically · punctiliously · fastidiously · unerringly
With high proficiency
- masterfullyWith exceptional proficiency
- skillfullyWith practiced competence
- proficientlyWith practiced skill
- adeptlyIn a skilled manner
deftly · competently · capably · professionally · accomplished · polished · practiced · seasoned
flawlessly
Without any defects
- impeccablyWithout any flaws
- faultlesslyWithout any defects
- immaculatelyIn perfect, unblemished manner
perfectly · unblemished · spotlessly · pristinely · seamlessly · smoothly · cleanly · purely · wholly · completely
precisely
In an exact manner
- exactlyWith total accuracy
- accuratelyIn a correct manner
- correctlyIn accurate manner
meticulously · scrupulously · carefully · rigorously · methodically · systematically · punctiliously · fastidiously · unerringly · reliably
expertly
With high proficiency
- masterfullyWith exceptional proficiency
- skillfullyWith practiced competence
- proficientlyWith practiced skill
adeptly · deftly · competently · capably · professionally · accomplished · polished · practiced · seasoned · fluently
errorlesslyerroneously
In a faulty manner
incorrectly · wrongly · mistakenly · inaccurately · faultily
errorlesslysloppily
In an untidy manner
carelessly · haphazardly · negligently · shoddily · messily