adj. 不相干的;不恰当;缺乏时代性的,落后于潮流的;牛头不对马嘴;
💡 ir不+re再+lev提高,举起,变轻+ant形容词后缀 → 不相干的,不切题的
"That is completely irrelevant to the subject under discussion."
这跟讨论的主题完全不相关.
近义:immaterial, improper, inappropriate, inconsequential, inopportune, awry
反义:applicable, incumbent, apropos, pertaining, pertinent, relating