unrelatedness

unrelatedness — noun

1. the fact that two or more things have no logical link or connection between them

1.nounC1
Definition

the fact that two or more things have no logical link or connection between them — for example, two events that happen at the same time by chance but share no actual cause, or two topics in a discussion that switch suddenly without any clear reason

Example

The judge instructed the jury to consider the unrelatedness of the two separate events.

pattern: unrelatedness + of + two [nouns]

Kwame was surprised by the unrelatedness of the interview questions to his actual job experience.

pattern: unrelatedness + of + [noun] + to + [noun]

Common collocations
  • complete unrelatedness
  • apparent unrelatedness
  • unrelatedness between X and Y
  • unrelatedness of X to Y
  • unrelatedness of X and Y
Synonyms
  • disconnection

    focuses on the absence of a link; slightly more common in technical writing

  • lack of relation

    a more transparent phrasal alternative, often preferred in spoken contexts

  • separateness

    emphasises that the items are kept apart or distinct from each other

Antonyms
  • connection

    the most general opposite; neutral in register

  • relatedness

    the direct antonym, but very rare in actual usage

Grammar Patterns

unrelatedness + of + noun phrase

unrelatedness + between + plural noun phrase

unrelatedness + of + noun + to + noun

Usage Note

Typical in formal and academic writing rather than everyday conversation. The adjective 'unrelated' is far more common in informal contexts. This noun is almost always uncountable.

Word family

Synonym discussion

Sense: noun/1

While 'unrelatedness', 'disconnection', 'lack of relation', and 'separateness' all describe a missing link between items, they differ in nuance and typical context. 'Unrelatedness' is the most precise label for the logical absence of any meaningful tie — it is the nominal form of 'unrelated'. 'Disconnection' is slightly more concrete and often used for physical systems (a disconnected cable) or social bonds (disconnection from friends) rather than logical relationships. 'Lack of relation' is a transparent phrasal alternative that works in both formal and neutral registers but can sound wordy. 'Separateness' focuses on the idea that items exist independently and are kept apart, rather than that they simply have no link. 'Irrelevance' is a distinct concept: two things may be connected but irrelevant to a given question. For example: 'The unrelatedness of the two studies meant the first could not support the second.' but 'His comments were irrelevant to the discussion, even though they were related to the topic.'

disconnection ↗lack of relationseparateness ↗irrelevance ↗

Common collocations

Nouns

Adverbs

Phrases

  • unrelatedness of X to Y
  • unrelatedness between X and Y

Prepositions

Etymology

LatinFrenchEnglish

Formed in English by adding the noun-forming suffix '-ness' to the adjective 'unrelated', which itself is built from the prefix 'un-' (meaning 'not') and 'related' (from Latin 'relatus', past participle of 'referre' — 'to carry back'). The word first appeared in the 1680s. Although 'unrelated' is common, the noun form 'unrelatedness' has always been much rarer and remains primarily a formal or technical term.

First known use

1681

1681, in the meaning defined above