errorless

WordReference Random House Learner's Dictionary of American English © 2026

er•ror /ˈɛrɚ/   n. 

1. a mistake;
   inaccuracy:
   [countable] made several errors in addition.
2. the condition of being wrong:
   [uncountable] I was in error about the date of the party.

WordReference Random House Unabridged Dictionary of American English © 2026

er•ror  (er′ər), n. 

1. a deviation from accuracy or correctness;
   a mistake, as in action or speech:
   His speech contained several factual errors.
2. belief in something untrue;
   the holding of mistaken opinions.
3. the condition of believing what is not true:
   in error about the date.
4. a moral offense;
   wrongdoing;
   sin.
5. Sport [Baseball.] a misplay that enables a base runner to reach base safely or advance a base, or a batter to have a turn at bat prolonged, as the dropping of a ball batted in the air, the fumbling of a batted or thrown ball, or the throwing of a wild ball, but not including a passed ball or wild pitch.
6. Mathematics the difference between the observed or approximately determined value and the true value of a quantity.
7. Law
   • Law a mistake in a matter of fact or law in a case tried in a court of record.
   • Law See writ of error. 
8. Stamps [Philately.] a stamp distinguished by an error or errors in design, engraving, selection of inks, or setting up of the printing apparatus. Cf. freak¹ (def. 5), variety (def. 8).

• Latin errōr- (stem of error), equivalent. to err- err + -or -or¹
• Middle English errour 1250–1300

er′ror•less, adj. 
er′ror•less•ly, adv. 
Synonyms

• 1. blunder, slip, oversight. See mistake. 
• 4. fault, transgression, trespass, misdeed.