Undiscriminating describes a person who cannot — or does not bother to — tell good from bad, and so accepts everything equally. It sits on the judger, not the thing judged. An undiscriminating reader will read anything put in front of them; an undiscriminating eater eats whatever is on the plate without noticing whether it is good; an undiscriminating audience claps for everything. The tone is usually a gentle put-down, especially about taste in food, films, music, or clothes, and it hints that the person is missing something they could learn to notice. But it is not always unkind — used about an animal or a child it can be almost affectionate: "our dog has an undiscriminating appetite". Here is the part worth slowing down for. English "discriminate" has drifted into two lives. When people say "discrimination" today they nearly always mean the bad kind — treating people unfairly by race or sex — and that meaning has become so loud that the older, neutral one is fading. But the older sense simply means "to see a difference", and it survives inside a few phrases: a discriminating palate, a discriminating collector, discriminating taste — all compliments. Undiscriminating belongs entirely to that older family. Nobody hears anything about racism in it. It is a formal, written, slightly old-fashioned word; younger speakers are more likely to say "they've got no taste" or "they'll watch literally anything". A near-twin is "indiscriminate", but that one describes the action, not the person.

不加辨別的、沒品味的、來者不拒的（這裡的 discriminate 是「辨別」的老意思，跟「歧視」無關）