Synonyms: imbecility, stupidity, folly, foolishness, betise
Definition: a stupid mistake
Similar words: mistake, error, fault
Definition: a wrong action attributable to bad judgment or ignorance or inattention
Usage: he made a bad mistake; she was quick to point out my errors; I could understand his English in spite of his grammatical faults
Synonyms: stupidity
Definition: a poor ability to understand or to profit from experience
Similar words: inability
Definition: lack of ability (especially mental ability) to do something