markless
/ˈmɑːkles/Definitions
1. adjective
lacking marks or distinguishing features
“The markless surface of the table made it perfect for painting.”
2. adjective
unidentified or unmarked
“The police were unable to identify the markless body found in the alley.”
3. adjective
not bearing a trade mark
“The company’s markless products were not easily distinguishable from those of other brands.”