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 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 Minsky is the very opposite: chipper, imperturbable, and with impeccable manners. Jill Lepore, The New Yorker, 30 Sep. 2024 Both were introverts by nature and, for the most part, imperturbable on the court. Cindy Shmerler, New York Times, 24 May 2024 Susie Glass, the crime boss Eddie reports to, is essentially a carbon copy of Michelle Dockery’s Rosalind, from her cherry-red lips to her sky-high stilettos to her generally imperturbable air. Angie Han, The Hollywood Reporter, 26 Feb. 2024 See All Example Sentences for imperturbable
Recent Examples of Synonyms for imperturbable
Adjective
  • On vacation, Nicola Peltz styled hers in a breezy, nonchalant way, with a black tank and yellow paisley-print skirt.
    Christian Allaire, Vogue, 23 July 2025
  • The collection’s journey touched down in Argentina, the Scottish Highlands, as well as New Zealand and Australia, home of its merino wool, for a refined traveler’s wardrobe crafted from top-notch fabrications exuding nonchalant sophistication.
    Martino Carrera, Footwear News, 8 July 2025
Adjective
  • Later, after Hankison was sentenced, The Courier Journal counted at least 10 police cruisers parked outside the courthouse, although the situation remained calm.
    Josh Wood, The Courier-Journal, 23 July 2025
  • As more people seek healing, the conversation has shifted toward calm approaches to managing intense feelings.
    Essence, Essence, 23 July 2025
Adjective
  • Her name whispers of gentle waves, depth and a soothing light, a haven bright and serene, wild as the sea.
    Hannah Sacks, People.com, 24 July 2025
  • But Mitchell is based in the altogether more serene surroundings of Ealing, west London, in the same studio that brings SailGP to our TV screens.
    Tim Spiers, New York Times, 24 July 2025
Adjective
  • Even after catcher Hunter Goodman’s one-out single in the fourth, the Red Sox righty was unflappable.
    Gabrielle Starr, Boston Herald, 9 July 2025
  • His unflappable persistence to move from one pitch, one start, one year to the next; never satisfied with his best moments nor shaken by his rare failures.
    Jack Harris, Los Angeles Times, 1 July 2025
Adjective
  • Krypto maintains the decidedly unruly nature of the dog upon which he is based, a funny foil to Superman’s (played by David Corenswet) kind and composed comportment.
    Dan Heching, CNN Money, 12 July 2025
  • Despite suffering from a severe injury at 13,800 feet, the climber remained responsive and composed.
    Sarah Rumpf-Whitten, FOXNews.com, 9 July 2025
Adjective
  • There's so much to adore about the colorful gangland comic-book movie, and at the center of it is Warren Beatty as the hard-nosed detective with the radio watch, bright yellow overcoat and unshakable righteousness. 41.
    Brian Truitt, USA Today, 10 July 2025
  • What sets them apart is quiet strength –humility and unshakable determination.
    Karl Moore, Forbes.com, 29 June 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 30 Jul. 2025.

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