Can plagiarism be accidental?
Accidental plagiarism is one of the most common types of plagiarism. Perhaps you forgot to cite a source, or paraphrased something a bit too closely. Maybe you can’t remember where you got an idea from and aren’t totally sure if it’s original or not.
These all count as plagiarism, even though you didn’t do it on purpose. When in doubt, make sure you’re referencing your sources. Also consider running your work through a plagiarism checker tool prior to submission. These tools work by using advanced database software to scan for matches between your text and existing texts.