RELEVANCY
relevance, relevancy
(noun) the relation of something to the matter at hand
Source: WordNet® 3.1
Etymology
Noun
relevancy (countable and uncountable, plural relevancies)
(legal, Scotland) Sufficiency (of a statement, claim etc.) to carry weight in law; legal pertinence. [from 16th c.]
(uncountable) The degree to which a thing is relevant; relevance, applicability. [from 17th c.]
(countable) A relevant thing. [from 19th c.]
Usage notes
• In contemporary usage relevance is about 20 times more common in the US (COCA) and about 50 times more common in the UK (BNC) than relevancy.
Antonyms
• irrelevancy
Source: Wiktionary
Rel"e*vance, Rel"e*van*cy, n.
1. The quality or state of being relevant; pertinency; applicability.
Its answer little meaning, little relevancy bore. Poe.
2. (Scots Law)
Definition: Sufficiency to infer the conclusion.
Source: Webster’s Unabridged Dictionary 1913 Edition