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undecidability

Upper-Intermediate (B2)

IPA: /ˌʌndɪˈsaɪdəˌbɪlɪti/

KK: /ʌnˌdɪˈsaɪdəˌbɪlɪti/

noun
Definition

The condition where a problem cannot be definitively resolved or determined as true or false.


Example

The concept of undecidability is important in computer science and mathematics.


Conversation
Sloth A
Have you ever thought about the concept of undecidability in math?
Sloth B
Yeah, it's fascinating how some problems just can't be resolved.
Sloth A
Right? It makes you wonder about the limits of our understanding.
Sloth B
Exactly! It’s like a puzzle with no solution.

Synonyms & Antonyms
Synonyms
indeterminacy
ambiguity
uncertainty
Antonyms
decidability
certainty
clarity
Root Explanation

Undecidability → It is formed from "un-" (meaning not), "decidere" (from Latin, meaning to cut off or determine), and "-ability" (meaning the quality of being able to). The word "undecidability" refers to the quality of not being able to determine or decide something.

Memory Tip

Think of 'not' ('un-') being able to 'determine' ('decidere') something — that's why undecidability means you cannot make a decision.

Visually Confused Words
unexcitability
unsociability
unreliability
unreadability
enunciability
deceivability
unliability
indescribability
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