irrelevant etymology

English word irrelevant comes from English in-, English relevant

Detailed word origin of irrelevant

Dictionary entry	Language	Definition
in-	English (eng)	In, into (non-productive) Added to adjectives to mean not. (non-productive) Added to nouns to mean lacking or without. (non-productive) Used with certain words to reverse their meaning In, into, towards, within.
relevant	English (eng)	Directly related, connected, or pertinent to a topic.. Not out of date; current.
irrelevant	English (eng)	Not related, not applicable, unimportant, not connected.

Descendants of in-: immoral impound inappropriate inaudible incapable incomprehensible indispensable inexperienced informal informed inhuman inland insecure insensitive insignificant inspector invalid invaluable irresistible irresponsible
Descendants of relevant: relevance