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
  • No wonder Trump is nonchalant about shutdown.
    Chris Brennan, USA Today, 2 Oct. 2025
  • Is this the most nonchalant big play of the high school season so far?
    Grace Raynor, New York Times, 30 Sep. 2025
Adjective
  • He was being put through training recently to test his ability to stay calm under pressure as Douglas tried to overstimulate his senses.
    Craig Shoup, Nashville Tennessean, 3 Oct. 2025
  • What made the situation a whole lot easier for both of them was the fact that Breezy stayed happy and calm in her car seat through the whole episode.
    Jack Beresford, MSNBC Newsweek, 3 Oct. 2025
Adjective
  • This serene, design-forward space oozes relaxation — cozy up in one of the sculptural chairs and get ready for one of the best massages in town.
    Angela Caraway-Carlton, Miami Herald, 4 Oct. 2025
  • Among the Trees and Hilltops After Nobu’s serene luxury, Acre Resort was a lush escape.
    Lisa Greissinger, Travel + Leisure, 4 Oct. 2025
Adjective
  • The good ones have learned to remain calm and unflappable, minding their body language both in front of their players and the media.
    Don Riddell, CNN Money, 25 Sep. 2025
  • The Buffs need a signal-caller that — in Shedeur fashion — is cool with scoring quickly and unflappable while playing from behind in a hostile environment.
    Kyle Newman, Denver Post, 11 Sep. 2025
Adjective
  • Only on particularly bumpy tarmac did the GTS-spec suspension become too jarring with the adaptive dampers stiffened up in sport mode, but switching them to normal offered the best of both worlds—excellent, composed body control and tuning that ironed out imperfections remarkably well.
    Peter Nelson, Robb Report, 1 Oct. 2025
  • 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
Adjective
  • Like gravity, like time; there are four unshakable laws that hold the whole damn business together: Press.
    Chris Cardillo, Rolling Stone, 23 Sep. 2025
  • The Lynx play with unshakable swagger and intense focus, from supernova Collier to sharpshooting Kayla McBride to the tenacious Stud Budz.
    Steven Louis Goldstein, New York Times, 13 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 6 Oct. 2025.

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