Dno
dno definition by Slang.net - The Slang Dictionary
This page explains what the abbreviation "dno" means. The definition, example, and related terms listed above have been manually compiled and written by the Slang.net team.
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Dno is an abbreviation used in text messages and online for "don't know." It is used when a person doesn't know the answer to a question.
Dno is one of many terms that can be used to give an unsure answer. Some other terms include dunno, DK, and IDK.