Crossword clues for It can be casual: Abbr. 3 lettersAnswerClueFRIIt might be casual: Abbr.FRIIt may be casual: Abbr.FRIIt can be casual: Abbr.FRICasual workday: Abbr.FRICasual day: Abbr.FRICasual-dress day (abbr.)FRICasual clothes day: Abbr.FRICasual day, perhaps: Abbr.