- 1(of a person) with a name that is not known or that is not made public an anonymous donor The money was donated by a local businessman who wishes to remain anonymous.
- 2(abbreviation anon.) written, given, made, etc. by someone who does not want their name to be known or made public an anonymous letter
- 3without any unusual or interesting features long stretches of dull and anonymous countryside new housing estates with their anonymous tower blocks and large barren spaces
See anonymous in the Oxford Advanced Learner's Dictionary
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