caustic

adjective
caus·​tic | \ ˈkȯ-stik How to pronounce caustic (audio) \

Definition of caustic

 (Entry 1 of 2)

1 : capable of destroying or eating away by chemical action : corrosive The chemical was so caustic that it ate through the pipe.
2 : marked by incisive sarcasm a caustic film review caustic humor
3 : relating to or being the surface or curve of a caustic (see caustic entry 2 sense 2)

caustic

noun

Definition of caustic (Entry 2 of 2)

1 : a caustic agent: such as
a : a substance that burns or destroys organic tissue by chemical action
b : a strong corrosive alkali (such as sodium hydroxide)
2 : the envelope of rays emanating from a point and reflected or refracted by a curved surface

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Other Words from caustic

Adjective

caustically \ ˈkȯ-​sti-​k(ə-​)lē How to pronounce caustically (audio) \ adverb
causticity \ kȯ-​ˈsti-​sə-​tē How to pronounce causticity (audio) \ noun

Choose the Right Synonym for caustic

Adjective

caustic, mordant, acrid, scathing mean stingingly incisive. caustic suggests a biting wit. caustic comments mordant suggests a wit that is used with deadly effectiveness. mordant reviews of the play acrid implies bitterness and often malevolence. acrid invective scathing implies indignant attacks delivered with fierce severity. a scathing satire

Did You Know?

Adjective

If you have a burning desire to know the origins of "caustic," you're already well on the way to figuring it out. "Caustic" was borrowed into English in the 14th century from the Latin causticus, which itself derives from the Greek kaustikos. "Kaustikos," in turn, comes from the Greek verb kaiein, meaning "to burn." Other "kaiein" descendants in English include "cautery" and "cauterize," "hypocaust" (an ancient Roman heating system), "causalgia" (a burning pain caused by nerve damage), and "encaustic" (a kind of paint which is heated after it's applied).

Examples of caustic in a Sentence

Adjective

His [Roosevelt's] caustic cousin, Alice Roosevelt Longworth, called him a sissy and a mama's boy. — Garry Wills, Atlantic, April 1994 It was Schuyler's gift for satire and his caustic wit that distinguished his writings and led to his nickname, the Black Mencken. — Henry Louis Gates, Jr., New York Times Book Review, 20 Sept. 1992 Albert quailed before those caustic pronouncements, he shuddered and blanched and felt his stomach drop like a croquette into a vat of hot grease. — T. Coraghessan Boyle, Harper's, October 1987 The chemical was so caustic that it ate through the pipes. She wrote a caustic report about the decisions that led to the crisis.
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Recent Examples on the Web: Adjective

Jonathan Parker plays Tom, with Rolando Cantu Jr. as his caustic co-worker, Carter, and Amanda Rawlings as Jeannie. Don Maines Staff Writer, Houston Chronicle, "Biting Pasadena comedy explores how society views plus-sized people," 16 Aug. 2019 More Stories Something changed in the Season 1 finale, though, when Succession’s occasionally dissonant modes of verbal absurdity and caustic family drama converged into tragedy. Sophie Gilbert, The Atlantic, "Succession Is Better Than Ever," 11 Aug. 2019 The miniature ball bearings market requires low noise and engineering design in response to extreme temperatures, ultra-high speeds and caustic environments. Stephen Singer, courant.com, "Kaman expands German precision bearings business to keep up with rising demand in medical, aerospace markets," 30 July 2019 Despite the broad support, the effort to essentially make the fund permanent has been the subject of a caustic political fight on Capitol Hill in recent weeks. Nicholas Wu, USA TODAY, "Compensation fund for 9/11 responders expected to pass in Senate Tuesday," 23 July 2019 Away from the cameras, however, he’s known to be a serious politician, with a quick temper and caustic turn of phrase. Phil Boucher, Fortune, "What Can We Expect From Boris Johnson? Scandals, Screw-Ups, Quips, and Comebacks," 23 July 2019 Bouchard then showered to wash the caustic substance off her body and left for the evening. Ben Rothenberg, New York Times, "In Court, Eugenie Bouchard Describes Locker Room Fall at the U.S. Open," 21 Feb. 2018 Comparison and jealousy are caustic and rarely provide a long-term boost to your self-esteem. Steve Booren, The Denver Post, "Improving investor behavior: Strengthen your financial superpowers," 21 July 2019 ZinZanni might seem to have come from the past with its rather caustic, Edith Piaf-like songstress-emcee in Amelia Zirin-Brown and the operatically capable Kelly Britt (Britt is one of the local members of a mostly international cast). Chris Jones, chicagotribune.com, "Teatro ZinZanni opens in Chicago with retro thrills, cocktails and a chilled-out vibe," 19 July 2019

Recent Examples on the Web: Noun

What McHugh favored was the fantastic, the caustic, the nakedly human, art with an irreverent or whimsical sense of humor, and art with little remove from raw physicality. Leah Ollman, latimes.com, "This Candy Store wasn't a candy store: Remembering a California gallery that made art stars," 3 July 2018 The Sympathizer is the caustic, hyper-verbal tale of a double agent embedded in California after the end of the war, sending information back to Vietnam about the activities of the men who are both his friends and enemies. Josephine Livingstone, New Republic, "Viet Thanh Nguyen’s Ghosts," 25 July 2017 Mr. Trump’s other mentor was the caustic and conniving McCarthy-era lawyer Roy Cohn, who counseled Mr. Trump never to give in or concede error. Glenn Thrush And Maggie Haberman, New York Times, "Why Letting Go, for Trump, Is No Small or Simple Task," 21 Mar. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'caustic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of caustic

Adjective

14th century, in the meaning defined at sense 1

Noun

15th century, in the meaning defined at sense 1

History and Etymology for caustic

Adjective and Noun

Latin causticus, from Greek kaustikos, from kaiein to burn

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