Irrelevant
来自Big Physics
wiktionary
From ir- + relevant.
etymonline
irrelevant (adj.)
1680s, from assimilated form of in- (1) "not, opposite of" + relevant. Related: Irrelevantly.
It is worth remembering that irrelevant & relieving are the same word; that, presumably, is irrelevant which does not relieve or assist the problem in hand by throwing any light upon it. [Fowler]
