Undecidable

Synonyms for "undecidable" (9 found)

Ranked by relevance and common usage.

Closest matches (2)

Adjective(2 words)
incomputableindeterminable

Strong matches (3)

Related words (4)

Noun(1 words)
more ambiguous

Choosing the right synonym

  • Closest matches in this entry: incomputable, indeterminable, indeterminate, insolvable, irresolvable.
  • Sentence evidence is available for undecidable, so synonym choice can be checked against real usage rather than a flat word list.
  • Ranking signals come from opengloss, derived_reverse, wordnet.

Synonym selection checklist

  • Match the part of speech before comparing meanings.
  • Check whether the synonym changes intensity, formality, or emotional tone.
  • Read the replacement inside the full sentence, not just beside "undecidable".
  • Prefer the clearest word over the most unusual word when writing for speed or comprehension.

When not to replace "undecidable"

Keep "undecidable" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.

If two options seem close, choose the one that best matches the audience and purpose of the sentence.

Replacement workflow

1. Preserve meaning

Choose a synonym only if it keeps the core idea of "undecidable" intact in the sentence you are editing.

2. Tune tone

Check whether the replacement sounds more formal, casual, emotional, technical, or forceful than the original word.

3. Re-read context

Read the full sentence after the swap. Keep the synonym only when the sentence becomes clearer or more precise.

Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.

Final fit check

After choosing a replacement for "undecidable", read the sentence once for meaning and once for rhythm. The best synonym should feel natural in the full sentence, not only accurate in a word list.

If the synonym makes the sentence slower, vaguer, or more dramatic than intended, keep "undecidable" or choose a simpler alternative from the closest-match group.

Related word relations

OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.

6 relation types

More general

4 entries
computability conceptdecision propertyepistemic statustheoretical property

More specific

6 entries
indeterminate claimlinguistic ambiguitysemantic indeterminacyundecidable problemundecidable propositionunresolved issue

Collocations

5 entries
undecidable issueundecidable problemundecidable propositionundecidable questionundecidable statement

Inflections

2 entries
more undecidablemost undecidable

Derivations

2 entries

similar

1 entries

Sample sentences

1 total sentences available.

Tatoeba + Wiktionary

The first-order procedure SP differs from the proposi- tional procedure CP°₁ in an essential feature. Namely, CP°₁ always terminates while SP may run forever as we have seen with the example immediately after (3.7). This is not a specific defect of SP. Rather it is known that first-order logic is an undecidable theory while propositional logic is a decidable theory. This means that for the latter there are decision pro- cedures which for any formula decide whether it is valid or not — and CP°₁ in fact is such a decision procedure — while for the former such decision procedures do not exist in princi- ple. Thus SP, according to these results for which the reader is referred to any logic texts such as [End], [DrG] or [Lew], is of the kind which we may expect, it is a semi-decision procedure which confirms if a formula is valid but may run forever for invalid formulas. Therefore, termination by running out of time or space after any finite number of steps will leave the question for the validity of a formula unsettled. [...]

Source: wiktionary

Common questions

What are the closest synonyms for "undecidable"?

Closest matches include incomputable, indeterminable, indeterminate, insolvable, irresolvable.

How should I check whether a synonym fits "undecidable"?

Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.

More for "undecidable"

Meaning

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