noun · 5 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:/ɪmˌpɒsɪˈbɪliti/
General-American:/ɪmˌpɑsɪˈbɪliti/
US:Recorded audio is listed in the source snapshot.
rhymes with -ɪlɪti
CMU ARPABET:IH2 M P AO2 S IH0 B IH1 L IH0 T IY0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
Something that is impossible.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Examples
Meeting the deadline is an impossibility; there is no way we can be ready in time.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
The quality of being impossible.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
Examples
1548, Edward Hall, The Union of the Two Noble and Illustre Families of Lancastre and Yorke, London: Richard Grafton, Henry VIII, year 15, After long reasonyng, there wer certain appoynted, to declare the impossibilite of this demaunde to the Cardinal,
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
The state of being unable to do something.
Definition source: English Wiktionary via Wiktextract
Usage: countable, obsolete, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: inability, incapability, helplessness
Antonyms: none provided
4
noun
Meaning 4
an alternative that is not available
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: impossible action
Antonyms: none provided
Broader terms: option, alternative, choice
Narrower terms: impossible
5
noun
Meaning 5
incapability of existing or occurring
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.