Definition of accidentally adverb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. ACCIDENTALLY definition: by chance or mistake; in a way that is not planned or intended. See examples of accidentally used in a sentence. The meaning of ACCIDENTALLY is in an accidental or unintended manner : by accident. How to use accidentally in a sentence. The distinction between accidentally and accidently represents a common challenge for English learners at the B1 level and beyond, often leading to confusion even among native speakers. While accidently is frequently encountered in informal writing and digital communications, accidentally is the unequivocally correct and standard adverbial form in modern English. Understanding this difference. What is the Difference Between Accidently and Accidentally? In this post, I will compare accidently vs. accidentally. I will outline which of these spellings is correct and showcase the correct spelling in example sentences. Plus, I will show you an easy way to remember which of these two spellings is correct in written English. Is it accidently or accidentally? Learn the correct spelling, meaning, pronunciation, grammar rules, and examples in this simple guide. Accidently or accidentally? Learn the correct spelling, meaning, differences, examples, dialogues, and tips in this clear 2026 writing guide. ACCIDENTALLY definition: 1. by chance or by mistake: 2. by chance or by mistake. Learn more. Wondering whether to use 'accidentally' or 'accidently'? We can help you miake the right choice, plus teach you how to use it in a sentence. The difference between accidently and accidentally. Correct usage, spelling tips, examples, and FAQs for clear writing guidance.