tune (someone/something) out
phrasal verb with tune verb [ T ] uk/tʃuːn/ us/tuːn/
US informal
不理睬，对…置之不理
to ignore someone or not give your attention to something or to what is happening around you
Most of what he says is such garbage that I just tune him out. 他讲的全是废话，所以我干脆不去理睬。