подлинный

Etymology
Unidentified form; usually associated with (see ), on the supposed basis that during court punishment people were beaten with  to obtain the truth; according to an alternative version, it is a derivative secondary adjective with the suffix  from the root, a primary adjective from "; according to another version, it is derived from the root of the prepositional-case combination , with an assumed primary meaning of "corresponding to the specified length".

Adjective

 * 1) original, authentic, genuine
 * 2) true, real, pure