- The definition of inadvertent is something unintentional or careless.
An example of inadvertent is someone accidentally telling another person's secret.
- not attentive or observant; heedless
- due to oversight; unintentional
Origin: prob. back-formation from inadvertence
- inadvertently adverb
Used by arrangement with John Wiley & Sons, Inc.
- Not duly attentive.
- Marked by unintentional lack of care. See Synonyms at careless.
- inˌad·verˈtent·ly adverb