Answer: onetime

AnswerCrossword Clue
ONETIMENot to be repeated
onetimeformer
onetimeformer
ONETIMEEx-
ONETIMEWord for a has-been
ONETIMEFormerly.
ONETIMEAt some past date.
ONETIMEFormer.
ONETIMEQuondam; former.
ONETIMEQuondam.
ONETIMESingular event
ONETIMEWithout repetition
ONETIMEPrevious
ONETIMEPast
ONETIMEUnique
ONETIMEErstwhile
ONETIMEFormer
ONETIMEQuondam
ONETIMEUnique, sort of