Synonym Chooser

How is the word imperturbable different from other adjectives like it?

Some common synonyms of imperturbable are collected, composed, cool, nonchalant, and unruffled. While all these words mean "free from agitation or excitement," imperturbable implies coolness or assurance even under severe provocation.

the speaker remained imperturbable despite the heckling

In what contexts can collected take the place of imperturbable?

The words collected and imperturbable are synonyms, but do differ in nuance. Specifically, collected implies a concentration of mind that eliminates distractions especially in moments of crisis.

the nurse stayed calm and collected

When is composed a more appropriate choice than imperturbable?

Although the words composed and imperturbable have much in common, composed implies freedom from agitation as a result of self-discipline or a sedate disposition.

the composed pianist gave a flawless concert

When can cool be used instead of imperturbable?

In some situations, the words cool and imperturbable are roughly equivalent. However, cool may imply calmness, deliberateness, or dispassionateness.

kept a cool head

When is it sensible to use nonchalant instead of imperturbable?

While in some cases nearly identical to imperturbable, nonchalant stresses an easy coolness of manner or casualness that suggests indifference or unconcern.

a nonchalant driver

When could unruffled be used to replace imperturbable?

While the synonyms unruffled and imperturbable are close in meaning, unruffled suggests apparent serenity and poise in the face of setbacks or in the midst of excitement.

harried but unruffled

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of imperturbable The index took a mere three weeks and a day to fall just over 10% from its peak on Feb. 19 through Thursday’s close, in its way an equal and opposite reaction to the imperturbable rally that had lifted the market to those highs. Michael Santoli, CNBC, 15 Mar. 2025 Valeska is the movie’s stabilizing presence, imperturbable even in the face of potential natural disaster. David Rooney, The Hollywood Reporter, 25 Feb. 2025 Standing in the rostrum of the House of Representatives, a gavel in her hand and a look of imperturbable stoicism on her face, Ms. Harris officiated as the two houses of Congress met in joint session to formally count the Electoral College votes for president. Peter Baker, New York Times, 6 Jan. 2025 The team’s droll, imperturbable manager, Dave Roberts, spent much of his summer issuing medical briefings on infirm pitchers. Nicholas Dawidoff, The New Yorker, 3 Nov. 2024 See All Example Sentences for imperturbable
Recent Examples of Synonyms for imperturbable
Adjective
  • Warren, in his typically nonchalant fashion, downplayed his early impact in the Colts’ offense.
    James Boyd, New York Times, 11 Sep. 2025
  • Faced with punishment from school administrators, Westman appeared alternately nervous and nonchalant, the former employee said.
    Tim Stelloh, NBC news, 29 Aug. 2025
Adjective
  • The airport in Cap-Haïtien was calm and orderly, the streets were alive with daily commerce and children in bright yellow uniforms played together during recess.
    Footwear News, Footwear News, 12 Sep. 2025
  • Meanwhile, the decent people who are likely to pay attention to calls for calm and cool aren’t the ones raising the temperature anyway.
    Chris Stirewalt, The Hill, 12 Sep. 2025
Adjective
  • The video of serene waves that swished behind the curved stage at the start of Dua Lipa’s concert slowly intensified until the tide became a surge, an appropriate analogy for the pop superstar’s arrival in the US for the first time in more than three years.
    Melissa Ruggieri, USA Today, 6 Sep. 2025
  • Previously owned by John Fogerty—and briefly before him, Sylvester Stallone—the property combines serene country charm with celebrity-caliber amenities.
    Abby Montanez, Robb Report, 5 Sep. 2025
Adjective
  • The difference there is that Keanu Reeves is unflappable, while Odenkirk has a sputtering quality to him that adds a comedic layer to his bloody lash-outs.
    Katie Rife, IndieWire, 9 Sep. 2025
  • As the announcer remarks upon how the normally meticulous and unflappable Haines is playing with an uncommon aggression, Hitchcock’s urgent camerawork and rapid cuts show Guy, pressed for time and needing to make a hasty exit, playing at a pace that would give Rafael Nadal an aneurysm.
    Joe Reid, Vulture, 29 Aug. 2025
Adjective
  • The vocabulary being used by Qatar’s prime minister is strong, evocative and damning, a departure from his usual composed response to the incessant twists and turns of trying to end the 23-month war in Gaza.
    Paula Hancocks, CNN Money, 10 Sep. 2025
  • Remember, significant wealth can be created in the market by those who maintain a composed and strategic approach during times of volatility.
    Trefis Team, Forbes.com, 10 Sep. 2025
Adjective
  • While his name may have been mispronounced for the bulk of his career, Washington’s legacy as one of the greatest actors of all time remains unshakable.
    Preezy Brown, VIBE.com, 4 Sep. 2025
  • Here, Hawke is once again fueled by an unshakable conviction, and he’s once again faced with considerable resistance.
    Ben Travers, IndieWire, 4 Sep. 2025
Adjective
  • As did the nerveless manner in which the striker — who turns 38 in March — sent goalkeeper Harry Tyrer the wrong way from the spot to clinch another three points.
    Richard Sutcliffe, The Athletic, 9 Jan. 2025
  • Instead, Kvitova produced a nerveless performance, finishing off the match with her first ace of the final.
    Danielle Rossingh, Forbes, 27 June 2021

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Cite this Entry

“Imperturbable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/imperturbable. Accessed 13 Sep. 2025.

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