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Synonyms

unsinkable

British  
/ ʌnˈsɪŋkəbəl /

adjective

  1. not capable of sinking or being sunk

"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

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.

The safety features led to Titanic being considered by many to be "unsinkable".

From BBC • Mar. 31, 2026

They have developed a technique that makes ordinary metal tubes unsinkable -- meaning the tubes stay afloat regardless of how long they remain underwater or how much damage they sustain.

From Science Daily • Jan. 30, 2026

Yet they were unsinkable; both of them moved to England, married well and tried to distance themselves from their pasts.

From The Wall Street Journal • Nov. 28, 2025

On a night his team was knocked flat, he remained unsinkable.

From Los Angeles Times • Oct. 29, 2023

I watch through the window as he uses bright yellow paint to draw a large letter G on the back of our hopefully unsinkable, but likely very sinkable, cardboard boat.

From "Red Flags and Butterflies" by Sheryl Azzam