Synonym Chooser

How is the word spontaneous distinct from other similar adjectives?

Some common synonyms of spontaneous are automatic, impulsive, instinctive, and mechanical. While all these words mean "acting or activated without deliberation," spontaneous implies lack of prompting and connotes naturalness.

a spontaneous burst of applause

In what contexts can automatic take the place of spontaneous?

The meanings of automatic and spontaneous largely overlap; however, automatic implies action engaging neither the mind nor the emotions and connotes a predictable response.

his denial was automatic

When is it sensible to use impulsive instead of spontaneous?

In some situations, the words impulsive and spontaneous are roughly equivalent. However, impulsive implies acting under stress of emotion or spirit of the moment.

impulsive acts of violence

When could instinctive be used to replace spontaneous?

The synonyms instinctive and spontaneous are sometimes interchangeable, but instinctive stresses action involving neither judgment nor will.

blinking is an instinctive reaction

Where would mechanical be a reasonable alternative to spontaneous?

The words mechanical and spontaneous are synonyms, but do differ in nuance. Specifically, mechanical stresses the lifeless, often perfunctory character of the response.

a mechanical teaching method

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 spontaneous One of the evening’s most touching moments came through Badu’s spontaneous and heartfelt interaction with the ASL interpreter. Skylar Mitchell, Essence, 6 July 2025 No amount of internal emails or Slack channels can replace the trust built through a lunch, a walk, or a spontaneous conversation in the hallway. Jj Rosen, The Tennessean, 2 July 2025 Brian Beattie: The company was amazing, and the general spontaneous timing and routing of the trip was totally stimulating, but Red Mountain is a unique experience. Michael Barnes, Austin American Statesman, 2 July 2025 Relatedly, many people become more open to spontaneous thinking in the evening, when the brain is less focused and inhibited. Matt Fuchs, Time, 10 July 2025 See All Example Sentences for spontaneous
Recent Examples of Synonyms for spontaneous
Adjective
  • Nathan Kaufman, a health care consultant and long-time Palomar observer who has been critical of recent leadership decisions, said that the pact between Palomar and UCSD is not an automatic win given the current state of health care margins.
    Paul Sisson, San Diego Union-Tribune, 24 July 2025
  • The service, launched in 2021, offered unlimited photo and video storage to AT&T’s Protect Advantage plan subscribers with the convenience of automatic backup at full quality and no data charges when backing up over AT&T’s network.
    Paul Monckton, Forbes.com, 24 July 2025
Adjective
  • Driving through deep water can also damage a vehicle's mechanical and electrical systems.
    KANSAS CITY STAR WEATHER BOT, Kansas City Star, 22 July 2025
  • Driving through deep water can also affect a vehicle's mechanical and electrical systems.
    CA Weather Bot, Sacbee.com, 22 July 2025
Adjective
  • While some seemed excited about Buck's sudden appearance, some speculated about the possibility of Stephanopoulos leaving the show.
    Alexis Simmerman, Austin American Statesman, 25 July 2025
  • Then Kings of Leon and Black Keys come out of Nashville and then all of a sudden the diversity of the music that was coming out of there started to really grow over a short period of time.
    Melonee Hurt, The Tennessean, 25 July 2025
Adjective
  • That leads to the second category: a simple reflex agent with state.
    John Werner, Forbes.com, 10 July 2025
  • Some bass-heavy speakers can create an annoying booming sound from the reflex port at the rear of the speaker.
    Mark Sparrow, Forbes.com, 15 June 2025
Adjective
  • So marketers are faced with the challenge of adapting once again to a new reality, where buying isn’t driven by emotional response but by algorithms and robotic logic.
    Bernard Marr, Forbes.com, 14 July 2025
  • In a warehouse setting, this means robotic arms could inspect the contents of packages moving down a conveyor belt without unpacking them.
    Kurt Knutsson, FOXNews.com, 13 July 2025
Adjective
  • There is no big screen, rather circular digital touchscreens surround the steering wheel to allow instinctive commands without losing sight of the road or contact with the steering wheel.
    Trinity Francis, Forbes.com, 21 July 2025
  • Making playthings of space and grammar, Gray Latitudes is a bold first publication by an author who approaches crafting thoughtful poetry in the most impulsive and instinctive ways.
    Wanjeri Gakuru July 11, Literary Hub, 11 July 2025
Adjective
  • Another customer says the soap works wonders for their mechanic husband and is powerful enough to remove dirt and grease.
    Jessie Quinn, StyleCaster, 10 July 2025
  • Before becoming a cofounder, Hildreth worked in roles that many would dismiss as mundane: mechanic, logistics officer and government contractor.
    Cheryl Robinson, Forbes.com, 9 June 2025
Adjective
  • Looking for their environmental DNA in scales, slime or skin cells that living beings shed all the time is a simpler way, Workman said.
    Madeline Heim, jsonline.com, 24 July 2025
  • The simple solution is wearing regular ballet flats, whether they’re made from leather, satin, or something else.
    Katie Decker-Jacoby, StyleCaster, 23 July 2025

Browse Nearby Words

Podcast

Cite this Entry

“Spontaneous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/spontaneous. Accessed 30 Jul. 2025.

More from Merriam-Webster on spontaneous

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!