Difficulty: Intermediate | Prerequisites: Familiarity with the plot of Cat on a Hot Tin Roof (Acts 1–3)
Tennessee Williams's Cat on a Hot Tin Roof treats mendacity (lying, dishonesty, self-deception) as the defining condition of the Pollitt family. This theme runs through every major relationship in the play and connects to questions of inheritance, mortality, sexuality, and love. If you are studying Southern Gothic drama or mid-century American theatre, this is the theme examiners return to most often.
Every major character in Cat on a Hot Tin Roof lies, and they all know they are doing it. Williams uses mendacity as the word for the web of dishonesty that holds the Pollitt family together: the family hides Big Daddy's terminal cancer from him, Brick hides behind alcohol to avoid confronting his feelings about Skipper, and Maggie and Gooper each manoeuvre for the inheritance. The play argues that lying is not an individual failing but a system people live inside, and that proximity to death is the only thing that strips it away.
Mendacity
Systematic dishonesty, especially the kind that everyone participates in and no one names. Big Daddy uses the word repeatedly in Act 2. In simple terms, it is the culture of lying that the whole family breathes.
The "click"
Brick's term for the moment when enough alcohol numbs him into peace. Think of it as his off-switch for guilt, grief, and any pressure to tell the truth.
Spastic colon (the false diagnosis)
The cover story the family gives Big Daddy to hide his terminal cancer. In simple terms, this is the central lie of the plot: the family tells Big Daddy he is fine when he is dying.
Big Daddy's estate / the inheritance
The 28,000-acre plantation and its wealth, which Gooper and Mae scheme to secure and which Maggie fights for on Brick's behalf. The inheritance is the reason most of the family's lies exist in the first place.
Jack Straw and Peter Ochello
The two men who previously owned the plantation and lived together as a couple. Their relationship is the historical mirror Williams holds up to Brick and Skipper's bond, and it is referenced obliquely because the family avoids naming what it was.
Big Daddy's key line: "Mendacity is a system that we live in. Liquor is one way out an' death's the other."
Williams frames dishonesty not as individual moral failure but as the operating principle of the family, and by extension of polite Southern society.
Brick echoes the idea: "The fact is, mendacity is the system we live in." The repetition signals that father and son agree on the diagnosis, even as they deceive each other.
The family conceals Big Daddy's terminal cancer behind a fake diagnosis of a "spastic colon." Big Daddy believes the good news and is visibly relieved.
At the end of Act 2, Big Daddy works out that the family has been lying. His reaction is explosive: yelling, frustration, disgust. The moment is a turning point because it strips away the pretence that the family acts out of love.
Gooper and Mae lie to position themselves as the responsible heirs. Maggie lies about being pregnant to secure Brick's claim. Each faction's dishonesty is driven by the estate.
Big Daddy himself yells: "Frig Mae and Gooper, frig all dirty lies and liars!" His fury shows that even someone who has lived inside the system of mendacity can be devastated when the lies are aimed at him.
Brick claims he values truth above everything, yet he uses alcohol to avoid confronting difficult truths about himself.
Big Daddy challenges him directly: "This disgust with mendacity is disgust with yourself." The implication is that Brick's hatred of lying is really displaced self-loathing.
Brick's line, "Maybe it's being alive that makes them lie, and being almost not alive makes me sort of accidentally truthful," suggests that his alcoholic detachment is the only thing that lets him speak plainly.
Brick also insists that he and Skipper "never lied to each other," setting their relationship apart from every other bond in the play. Whether this claim is itself a form of self-deception is one of the play's central ambiguities.
Between Maggie and Brick: Maggie has lost Brick's trust over the events involving Skipper. Brick withholds affection and retreats into drinking.
Between the family and Big Daddy: the cancer lie damages trust catastrophically once Big Daddy discovers it.
Williams argues that lies damage people on two levels: they corrode the relationships between people, and they corrode the person doing the lying from the inside.
Students often treat mendacity as a theme that applies only to Big Daddy's cancer. It does not. Every relationship in the play is built on some form of dishonesty, including Brick's relationship with himself.
Students sometimes argue that Brick is the "honest" character because he says he values truth. Williams undercuts this repeatedly: Brick's honesty is selective, and Big Daddy points out that his disgust with mendacity may be self-directed.
It is a common error to treat Maggie's lies and Gooper's lies as morally equivalent. Williams gives Maggie more sympathetic motivation (survival, love for Brick), while Gooper and Mae are portrayed as calculating. The play does not ask you to approve of either, but it does distinguish between them.
Some students assume Big Daddy's anger at the end of Act 2 is only about the cancer lie. It is broader than that: he is reacting to the entire system of mendacity he has tolerated for decades.
⚠️ Mendacity is the single most quotable theme in the play. Examiners frequently ask you to trace how Williams develops the idea across Acts 1 to 3. Have at least three quotes ready.
⚠️ The distinction between personal lies (Brick to himself) and systemic mendacity (the family as a whole) is a common essay question. Be prepared to discuss both levels.
⚠️ Big Daddy's Act 2 confrontation with Brick is the scene most often set for close reading. Know the key lines and what each character reveals about their own dishonesty.
⚠️ If the exam asks about symbolism, alcohol and the "click" are the symbols most directly tied to mendacity: Brick's drinking is his escape from the system of lies.
True or false: Brick is the only character in the play who never lies.
False. Brick's claim to honesty is undercut by his self-deception about Skipper and his avoidance through alcohol.
Fill in the blank: Big Daddy describes mendacity as a ______ that everyone lives in.
System.
True or false: The family tells Big Daddy the truth about his cancer from the start.
False. They tell him he has a spastic colon.
Fill in the blank: Brick says liquor and ______ are the only two ways out of mendacity.
Death.
True or false: Maggie's final lie (claiming she is pregnant) is motivated primarily by cruelty.
False. It is motivated by her desire to secure Brick's inheritance and, arguably, to save their marriage.
Q: How does Williams present mendacity as a systemic rather than individual problem in Cat on a Hot Tin Roof?
A: Williams shows that every character participates in lying, not just one or two. Big Daddy's repeated use of the word "mendacity" frames dishonesty as a condition the whole family inhabits. The cancer lie is collective (the family agrees to deceive Big Daddy together), Brick's alcoholism is a personal escape from the same system, and Maggie's final pregnancy lie shows that even sympathetic characters resort to deception to survive. The play's argument is that mendacity is structural, not incidental.
Q: Analyse the significance of Big Daddy's line: "This disgust with mendacity is disgust with yourself."
A: Big Daddy is suggesting that Brick's hatred of other people's lies is really displaced self-loathing. Brick cannot face the truth about his relationship with Skipper, so he projects his anger outward. The line is significant because it collapses the distinction Brick tries to maintain between himself (the honest one) and the rest of the family (the liars). Williams uses this moment to show that no one in the play, including Brick, is outside the system of mendacity.
Q: How does the revelation of Big Daddy's cancer diagnosis function as a turning point in the play?
A: When Big Daddy realises the family has been lying about his illness, his fury breaks the pretence of civility the family has maintained. It forces the underlying conflicts (inheritance, loyalty, Brick's drinking) into the open. The moment also demonstrates Williams's central point about mendacity: lies may hold relationships together temporarily, but they cause greater damage when exposed.
Q: Compare the lies told by Maggie and Gooper/Mae. How does Williams distinguish between different kinds of mendacity?
A: Gooper and Mae lie in calculated, self-serving ways, manoeuvring to control Big Daddy's estate. Maggie's lies (including her claim of pregnancy) are driven by desperation and love for Brick, even if the love is unrequited. Williams does not excuse either form of lying, but he gives Maggie more complexity and sympathy, suggesting that the motivation behind a lie matters even within a system where everyone deceives.
This theme connects directly to the sexuality and unrequited love theme in the same play: Brick's inability to be honest about Skipper is the personal version of the family's systemic dishonesty. If your course covers Arthur Miller's Death of a Salesman, compare Willy Loman's self-deception with Brick's. Both plays argue that American families sustain themselves through comforting lies.
The mendacity theme also fits into broader Southern Gothic conventions. Williams, like Flannery O'Connor and William Faulkner, presents the genteel Southern family as a structure held together by things left unsaid.
Mendacity, lying, deception, self-deception, dishonesty, Cat on a Hot Tin Roof themes, Tennessee Williams mendacity, Big Daddy cancer lie, spastic colon, Brick and truth, the click, Southern Gothic dishonesty, inheritance, Pollitt family, Maggie the Cat, Gooper and Mae, American drama themes, Act 2 confrontation