Other crossword clues for answer "ONCE"ONCEway back whenfairy tale openerat some point___ in a blue moonhistoricallyback thenthe last “O” of YOLOnever againa single timeeleven, in El Salvadorback in the day“Back in the good old days ?”start of many a fairy taleyears agothen“Back in my day ?”start of a fairy taleat some previous point“___ upon a time ?”in times paststart of a reminiscencelast “O” in YOLOpart of YOLOfirst word of Poe’s “The Raven”“Kiss her ___ for me” (“A Holly Jolly Christmas” lyric)years back___-oversecond word in many limerickshow many times the Washington Nationals have won the World Serieshow many times TV’s Perry Mason lost a case___ and for all