Matching Pairs AllusionsOnline version Allusions by Cynthia Cox 1 Sirens 2 Read the Riot Act 3 Sound and Fury 4 Achilles Heel 5 Crossing the Rubicon 6 All That Glitters is not Gold 7 Sacred Cow 8 Betrayed with a Kiss 9 Pearls Before Swine 10 Ivory Tower 11 Once in a Blue Moon 12 Thirty Pieces of Silver 13 Gordian Knot 14 Pound of Flesh 15 Crocodile Tears 16 Mrs. Grundy a supposed friend's treachery payment received for an act of treachery Something that cannot be interfered with or harmed in any way To issue a stern warning that if unacceptable behavior does not cease, severe consequences will follow. An attitude of narrow-minded prudishness to offer something precious to someone who are unable to appreciate the value of what is given refers to a great, tumultuous, and passionate uproar that is actually unimportant or meaningless A person who is secluded or protected from the real world and thus out of touch with reality Anything that tempts someone away from safety and towards a dangerous path Describes someone's insistence on being paid, even if repayment will destroy the debtor something which appears valuable on the outside may in fact be less than valuable; appearances can be deceptive To show false sympathy A vulnerability or point of weakness To take an irreversible step, often involving some danger Something that happens rarely Any extremely complex problem