| Term | Definition |
| Achille's Heel | Refers to a person's area of particular vulnerability. (Mythology and Legend) |
| Pound of Flesh | Used to observe/describe someones insistence on being repaid, even if the repayment will destroy/harm debtor. (Literature) |
| Sacred Cow | Refers to something that cannot be interfered with or harmed in everywhere (Language & Idioms) |
| Crossing the Rubicon | To take an irreversible step, often involving danger. (History, Culture, Ideas) |
| Rose-Colored Glasses | Means to have an unduly cheerful, optimistic, or favorable outlook. (Language and Idioms) |
| Once in a Blue Moon | Something occurs very rarely. (Language and Idioms) |
| Pearls Before Swine | to offer something precious to someone, or a group of people, unable to appreciate to value of what they are being given. (The Bible) |
| Mrs. Grundy | refer to such an attitude of narrow-minded prudishness. (Literature) |
| Crocodile Tears | To show false sympathy for someone (Language & Idioms) |
| Sirens | Anything that tempts a person away from safety and toward a destructive path. (Mythology & Legend) |
| Read the Riot Act | To issue a stern warning that if unacceptable behavior does not cease, severe consequences will follow. (History, Culture, Ideas) |
| Thirty Pieces of Silver/Betrayed with a Kiss | Refers to payment for act of treachery/Refers to a supposed friends treachery. |
| Ivory Tower | A person who is secluded or protected from the real world and therefore out of touch with reality is said to be residing in an "..." |
| All that Glitters is not Gold | Something that appears valuable on the outside, may be less valuable. Appearances are deceiving. |
| Sound and Fury | Refers to great, tumultuous and passionate uproar that actually is not important/meaningless. |
| Gordian Knot | Extremely complex problem, and cutting the "..." refers to solving such a problem in a quick and decisive manner. |