Unflushable

adj, noun

adj, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An item that cannot be flushed.

    "Recently, I asked Moffat about the "unflushables" gag -- which leads to one of the funniest jokes in the British show -- and he said flatly, "That was not taken out by me.""

Adjective
  1. 1
    That cannot be flushed. not-comparable

    "You may have heard an old crank in a big house ranting about appliances and unflushable toilets the other day."

  2. 2
    Not designed to be disposed of by flushing down the toilet. not-comparable

    "The Sydney water team are hoping that by showing families the 'unflushable' and 'unsinkable' items, that the environment will be a lot better off."

  3. 3
    That remains in the toilet bowl despite flushing. not-comparable

Example

More examples

"You may have heard an old crank in a big house ranting about appliances and unflushable toilets the other day."

Etymology

From un- + flushable.

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