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Synonyms

aplomb

American  
[uh-plom, uh-pluhm] / əˈplɒm, əˈplʌm /

noun

  1. imperturbable self-possession, poise, or assurance.

    Synonyms:
    imperturbability, equanimity, composure
    Antonyms:
    uncertainty, doubt, discomposure, confusion
  2. the perpendicular, or vertical, position.


aplomb British  
/ əˈplɒm /

noun

  1. equanimity, self-confidence, or self-possession

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of aplomb

First recorded in 1820–30; from French à plomb “according to the plummet” (straight up and down, vertical position); plumb ( def. )

Explanation

Aplomb is the ultimate test for cool: grace under pressure. Use aplomb to show great restraint under even the most trying circumstances. In retail, it's always a good idea to handle the angry customers with aplomb. Angry at the long lines at the grocery store? Irritated because the driver ahead cut you off? Take a deep breath, and approach life's messes with aplomb. When you think of aplomb, think cool, calm and collected. Not frazzled, furious, and fiery. Aplomb comes from the French word meaning "perpendicularity," from the phrase à plomb for "poised upright, balanced."

Keep Reading on Vocabulary.com

Vocabulary lists containing aplomb

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“I was wondering how she would approach it, and she’s done it with such aplomb and wisdom.”

From Los Angeles Times • Mar. 20, 2026

Semenyo's winner silenced a raucous and rowdy crowd with a real poacher's finish, reacting quickest to latch on to Rayan Ait-Nouri's cross and converting with aplomb.

From BBC • Feb. 28, 2026

After he joined Sanders as director of research, however, he felt less pressure and regained his aplomb.

From The Wall Street Journal • Dec. 17, 2025

Garnacho was the catalyst with a driving run and cross into the six-yard box, where Gusto headed home with aplomb.

From Barron's • Nov. 8, 2025

The ninth time Eisman retrieved a ball from some sand trap, or pretended his shot had not splashed into the water, he acted with the same unapologetic aplomb he had demonstrated the first time.

From "The Big Short" by Michael Lewis