Crossword clues for Regret.:REGRETSPolite reply to an invitation.REGRETSInvitation response, perhapsREGRETSRSVPs, oftenREGRETA sense of loss.REGRETCompunction.REGRETOne of a few that Sinatra had?REGRETContritionREGRETFeel bad aboutREGRETSee 34 AcrossREGRETRemorse.REGRETDaughter of haste.REGRETHave misgivings.REGRET1915 Kentucky Derby winner.REGRETFeel remorseREGRETLamentREGRETRueREGRETBemoanREGRETSRSVP optionREGRETSelf-reproachREGRETBe sorry aboutREGRETSMisgivingsREGRETContrite feelingREGRETMiss poignantly.REGRETKick oneselfREGRETFeel contritionREGRETHave second thoughtsREGRETBe sorry.REGRETFULSorry.REGRETFeeling felt by Miss Otis.REGRETTheme of the film "Before Sunset"REGRETSI can't make itREGRETFeeling that might keep you up at nightREGRETSecond thoughtsREGRETFeel sorry aboutREGRETTINGWishing undoneREGRETFeel contrite aboutREGRETBe sorry forREGRETSRSVP bad newsREGRETApology elementREGRETHaving "but one life to give for my country," to HaleREGRETWish undoneREGRETSIs sorry forREGRETSPolite RSVP replyREGRETSense of dissatisfactionREGRETFeeling of rueREGRETKing Lear themeREGRETSWhat an invitee may sendREGRETSense of lossREGRETPenitence.REGRETMourn for.