The meaning of accidentally is in an accidental or unintended manner : How to use accidentally in a sentence. See examples of accidentally used in a sentence.
Idiom accidentally on purpose (definition of accidentally from the cambridge advanced learner's dictionary & thesaurus © cambridge university press) If something happens accidentally, it didn't happen on purpose — blame it on a mistake, chance, or outside forces. If something happens accidentally, it happens by chance or as the result of an accident, and is not deliberately intended.
Names were accidentally erased from computer disks. Definition of accidentally adverb in oxford advanced learner's dictionary. Find 10 different ways to say accidentally, along with antonyms, related words, and example sentences at thesaurus.com.
Jan 17, 2026adverb accidentally (comparative more accidentally, superlative most accidentally) in an accidental manner;