I. ˈblən-dər verb
( blun·dered ; blun·der·ing -d(ə-)riŋ)
Etymology: Middle English blundren, probably of Scandinavian origin; akin to Old Norse blunda to shut one's eyes, doze, Norwegian dialect blundra
Date: 14th century
intransitive verb
1. : to move unsteadily or confusedly
2. : to make a mistake through stupidity, ignorance, or carelessness
transitive verb
1. : to utter stupidly, confusedly, or thoughtlessly
2. : to make a stupid, careless, or thoughtless mistake in
• blun·der·er -dər-ər noun
• blun·der·ing·ly -d(ə-)riŋ-lē adverb
II. noun
Date: 1693
: a gross error or mistake resulting usually from stupidity, ignorance, or carelessness
Synonyms: see error