inadvertently
Definitions
Without intention; accidentally.
In a manner resulting from a lack of attention; heedlessly.
Examples
I inadvertently deleted the important file while trying to clear my desktop.
She inadvertently revealed the surprise party plans during dinner.
The company inadvertently sent the confidential report to the wrong recipient.
Synonyms
unintentionally accidentally unwittingly unthinkingly casually involuntarily unpremeditatedly
Antonyms
intentionally deliberately purposely knowingly consciously willfully designedly