Thrice written and thrice burned

To have one's name be thrice written and thrice burned was the ultimate form of dishonor in Romulan culture. Performed by the Romulan Senate, it meant that the subject was stripped of all honor and their name could never be spoken again. 

After her failure to capture the USS Enterprise (NCC-1701) in 2267, Commander Di'on Charvon was subjected to this despite pleas on her behalf by her aunt, Commander Ael t'Rllaillieu.

Ael was herself thus punished in 2275 after turning on the Romulan Star Empire in alliance with the Enterprise 's crew to stop an Imperial telepathy research project. Ael and her crew aboard ChR felt that the project, which involved the mass kidnapping and dissection of Vulcans, was dishonorable to the Empire, but were forced into exile because of their treason. 

After Ael became a leading member of the Free Rihannsu rebellion against the Star Empire in 2276, even her fellow rebels refused to speak her name. The punishment was reversed after she was crowned Empress following the rebel victory, with James T. Kirk ritually burning a pennant from Bloodwing bearing House-clan Rllaillieu's sigil that Ael had left behind on Earth during her exile.