Here are the possible solutions for truly abbreviated sign off clue
Answer
Clue
Relevancy
yrs
Clue
"___ truly" (abbreviated sign-off)
yours
Clue
__ truly (letter sign-off)
estd
Clue
Abbreviated business sign
randr
Clue
Abbreviated time off
sato
Clue
Abbreviated Ozzy song off "Diary of a Madman"?
myhumps
Clue
2005 Black Eyed Peas hit that Pitchfork called "so monumentally vacuous, slapped together and tossed-off that it truly tests the definition of 'song.'"
