Unsinkable

adj, noun

adj, noun ·4 syllables ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A ship that was designed to be unsinkable.

    "As the construction and preparation of the unsinkables would require six weeks or two months , I thought it best to make report of my plan to the admiral before the departure from Key West ."

Adjective
  1. 1
    That cannot be sunk.

    "Any true Grecophile will understand when I say that the unsinkable condom and the smell of shit which precede the moment of illumination make it more exciting when it happens."

  2. 2
    That cannot be overcome or defeated. figuratively

    "unsinkable optimism"

Adjective
  1. 1
    incapable of being sunk wordnet

Synonyms

All synonyms
adamantineindefatigableindomitablenonsinkablenonsinkablesinkproof

Example

More examples

"The Titanic was believed to be practically unsinkable."

Etymology

From un- + sink + -able.

Related phrases

unsinkable rubber duck

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.