Crossword clues for S on an invitation, perhaps 3 letters:SILS on an invitation, perhapsELOPEAvoid stressing about invites, perhapsRSVPDecline the invite, perhapsRSVPAccept an invite, perhapsEATSOVERAccepts an invitation, perhapsSLAPDuel invitation, perhapsBYOBInvitation letters, perhapsNOGIFTSInvitation request, perhapsASKUPInvite in, perhapsREGRETSInvitation response, perhapsASKSUPInvites in, perhapsASKEDOUTInvited to dinner, perhapsIDAREYOUInvitation to disaster, perhapsASKSOUTInvites for dinner, perhapsASKINInvite for coffee, perhapsSLAPInvitation to duel, perhapsOVERUSEInvite diminishing returns, perhapsSPEDInvited a ticket, perhapsCOMEONECOMEALLInvitation to the circus, perhapsAJARInviting to a burglar, perhapsASKOUTInvite to a movie, perhapsASKUPInvite to one's apartment, perhapsHADUPInvited to one's third floor apartment, perhaps