Collocations for irrelevant - adj.

appear, be, seem
become
make sth, render sth
consider sth, deem sth, regard sth as, see sth as, view sth as
dismiss sth as
These arguments were dismissed as irrelevant.

completely, entirely, quite, totally, utterly, wholly
This argument is entirely irrelevant to the question of who is right.

increasingly
The UN is becoming increasingly irrelevant.

almost, more or less, virtually
essentially, largely
These issues are largely irrelevant and distract us from attending to the real questions.

rather, somewhat
simply
apparently, seemingly
politically

to
Her statement is irrelevant to this case.
It's all irrelevant to me.

Irrelevant is used with these nouns:
detail