irrelevant /ɪˈrɛləvənt/ adjective Learner's definition of IRRELEVANT
[more irrelevant; most irrelevant]
: not important or relating to what is being discussed right now : not relevant无关紧要的;不切题的;不相干的 —
sometimes + to — irrelevance
/ɪˈrɛləvəns/ also irrelevancy /ɪˈrɛləvənsi/ noun, plural irrelevancies also irrelevances