bad 含义广泛，指任何不好的或不合需要的品质。
evil 语气比bad强，强调道德上的邪恶不良，含狡猾凶险或危害他人的意味。
ill 与evil意义接近，但语气弱一些，常指道德或性质方面的不良。
poor 普通用词，侧重指事物的质量或数量低于标准或不合要求。用于指天气与食品时可与bad通用。
wicked 语气比evil强，指居心叵测，任意违反道德标准，有意作恶。
参考例句
1. The Pope was a poor person from Poland. 罗马教皇是从波兰来的一个穷人。
2. The poor children nestled up together for warmth. 这些可怜的孩子依偎在一块取暖。
3. Our government has done nothing to improve the condition of the poor. 我们的政府没有做任何事来改善穷人的生活环境。
英英解释
n.
1. people without possessions or wealth (considered as a group)
2. deserving or inciting pity
3. having little money or few possessions
4. characterized by or indicating poverty
5. lacking in specific resources, qualities or substances
6. not sufficient to meet a need
7. unsatisfactory
