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Definition of spineless

spineless

/ˈspaɪn.ləs/
spine · less

Adverb:spinelessly
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spineless Lexical Profile

spineless Game Scores & Validity

• adjective

1

Lacking courage, resolution, or moral strength; weak and easily intimidated.

Example

"Critics accused the committee of making a spineless decision by refusing to enforce the new ethics rules."


2

Having no backbone or vertebral column; invertebrate.

Example

"Jellyfish and earthworms are spineless creatures that rely on hydrostatic pressure for structural support."


3

Lacking sharp projections, thorns, or prickles (of a plant or animal).

Example

"The gardener cultivated a spineless variety of prickly pear cactus that is safe to handle without gloves."

Synonyms
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Antonyms
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• Rhymes for spineless

Word Origin & Etymology

First recorded in the early 17th century, formed from the noun 'spine' (derived from Latin 'spina', meaning 'thorn' or 'backbone') plus the privative suffix '-less'. The figurative sense of lacking moral courage emerged in the mid-19th century.

Cite this Entry


Wordmom. (2026). Definition of Spineless. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/spineless
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