The "best" synonym would depend on the context in which you are using it, because plagiarism happens for a lot of different reasons (some accidental) and from different motivations (some intentional). Here are some synonyms that might work:
The origin of plagiarism is early 17th century, from Latin plagiarius 'kidnapper' (from plagium 'a kidnapping,' from Greek plagion) + ism.
what is the best synonym for autocrat
The best synonym for emit is release.
The best synonym for vacuous is 'intelligent'
Synonym for respite: rest
The origin of plagiarism is early 17th century, from Latin plagiarius 'kidnapper' (from plagium 'a kidnapping,' from Greek plagion) + ism.
The simplest is to be very careful and to avoid plagiarism.
what is the best synonym for autocrat
The best synonym for emit is release.
The best synonym for emit is "release".
The best synonym for vacuous is 'intelligent'
Synonym for respite: rest
Best synonym for bossy is KING.
Sprout is a good synonym.
Planned economy- is the best synonym
A synonym is another way of phrasing something. A synonym for "to the best of your knowledge" would be "as far as you can tell".
All of the above