Synonyms & Antonyms of accidentally
accidentally

1. (Adverb) in a way that is not planned; by chance

- I accidentally spilled coffee on my shirt this morning.
Synonyms
unintentionally
fortuitously
unwittingly
unconsciously
inadvertently
incidentally
casually
unexpectedly
randomly
haphazardly
arbitrarily
adventitiously
undesignedly