Part of speech:
The definition of accidentally is something that happens by mistake or without intent.
without intention; in an unintentional manner
Find another word for unintentionally. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for unintentionally, like: without design, involuntarily, inadvertently, incidentally, casually, accidentally, unthinkingly, haphazardly, intentionally, unwittingly and deliberately.