Dictionary.com
Thesaurus.com
Synonyms

spineless

American  
[spahyn-lis] / ˈspaɪn lɪs /

adjective

  1. having no spines or quills.

  2. having no spine or backbone.

  3. having a weak spine; limp.

  4. without moral force, resolution, or courage; feeble.

    a spineless, lily-livered coward.

    Synonyms:
    indecisive, irresolute, weak
    Antonyms:
    resolute, strong

spineless British  
/ ˈspaɪnlɪs /

adjective

  1. lacking a backbone; invertebrate

  2. having no spiny processes

    spineless stems

  3. lacking strength of character, resolution, or courage

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of spineless

First recorded in 1820–30; spine + -less


Explanation

If you're spineless, you're weak or cowardly — or both. It would be spineless to watch a bully pick on someone much smaller and not try to intervene. You can certainly use this adjective to literally mean "lacking a spine," and you might if you're talking about invertebrates like the spineless forest lizard or the Garo spineless eel. It's more common to call people spineless as a derogatory way of commenting on their weakness. A spineless superhero is too scared to confront the bad guys, and a spineless politician avoids conversation with critical constituents.

Keep Reading on Vocabulary.com

Vocabulary lists containing spineless

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“Maybe people do it out of desperation,” she told me, “but it’s spineless and demoralizing.”

From Slate ● Jan. 20, 2026

As per Margaret Hartmann with New York Magazine's Intelligencer, the gift is "peak spineless groveling."

From Salon ● Jan. 15, 2025

But they and other invertebrates are the spineless backbones of ecosystems, playing critical roles as pollinators, predators, prey and decomposers.

From New York Times ● May 28, 2024

England's tour of India ended in woeful fashion as some spineless top-order batting resulted in a massive defeat inside three days in the fifth Test in Dharamsala.

From BBC ● Mar. 9, 2024

“No! You are fine—you’re a spineless jellyfish, but not dead enough to bury. Now take a look at these hands,” she ordered, and thrust them in front of me.

From "Dead End in Norvelt" by Jack Gantos

Random Word

Spin the wheel and learn a new word!

Get a word

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember new words for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com