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Definition of imperturbablenext

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 This low-volatility ascent since April quite resembles the imperturbable rally through all of 2017. Michael Santoli, CNBC, 25 Oct. 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
  • Her nonchalant, soft-glam is so perfectly mesmerizing, my TikTok and social media feeds are flooded with tutorials trying to re-create her signature style.
    Kaitlin Clapinski, InStyle, 8 Jan. 2026
  • One fictional and the other real, the drug lords look nonchalant.
    Carlos Aguilar, Los Angeles Times, 31 Dec. 2025
Adjective
  • Iranian state television on Sunday morning took a page from demonstrators, having their correspondents appear on streets in several cities to show calm areas with a date stamp shown on screen.
    CBS News, CBS News, 11 Jan. 2026
  • His brands, including Juicy Fruit and Spearmint, promoted gum as a way to calm nerves, curb hunger and stay focused.
    Deirdre Bardolf, FOXNews.com, 10 Jan. 2026
Adjective
  • Opposite a serene Rooney Mara and a raging Claire Foy, Buckley is a lone dissenting voice in Sarah Polley’s heart-wrenching portrait of a group of women and girls in an isolated Mennonite colony who are debating how to respond to a series of brutal attacks from the men in their community.
    Radhika Seth, Vogue, 12 Jan. 2026
  • The serene pool and hot tub area is no different, decorated with native plants and nestled into the landscape; the walls encasing the pool deck are a nearly identical hue to the surrounding mountains.
    Kristine Thomason, Outside, 11 Jan. 2026
Adjective
  • Milo is also unflappable in the face of critics.
    Stephanie Ganz, Parents, 5 Jan. 2026
  • Players say in that regard, McDaniel has been unflappable.
    Chris Perkins, Sun Sentinel, 1 Jan. 2026
Adjective
  • More aggressive than the Tide, more physical, more composed and clearly better prepared, the Hoosiers showed zero rust after a month-long break after the Big Ten championship game.
    Paul Myerberg, USA Today, 2 Jan. 2026
  • But Peggy never forgot her roots; a genre-blending selector with range, she’s known for her energetic but composed sets.
    Kelly Washington, Refinery29, 22 Dec. 2025
Adjective
  • Against a backdrop of a world divided, these teens rise with fire, wit, and unshakable humanity – delivering a masterclass in courage, conviction, and the kind of hope that refuses to be silenced.
    Kate Erbland, IndieWire, 6 Jan. 2026
  • When the giant Goliath rises to terrorize a nation, a young shepherd armed with only a sling, a few stones, and unshakable faith steps forward.
    Jill Goldsmith, Deadline, 19 Dec. 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 Jan. 2026.

More from Merriam-Webster on imperturbable

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