What is the word for a state of society without government or law?

• Anarchy is the word for a state of society without government or law.

• Anarchy (noun)
English Meaning: a state in which there is widespread wrongdoing and disregard for rules and authority.
Bangla Meaning: নৈরাজ্য; অরাজকতা; বিশৃঙ্খলা।

অপশন আলোচনা:
• Oligarchy (noun)
English Meaning: a small group of people who exercise control over a country, business, etc.
Bangla Meaning: সর্বময় ক্ষমতার অধিকারী ক্ষুদ্র এক গোষ্ঠীর শাসন; গোষ্ঠীশাসন; গোষ্ঠীশাসিত দেশ; এরূপ গোষ্ঠী।

• Monarchy (noun)
English Meaning: a system of government in which there is only one ruler whose power is unlimited.
Bangla Meaning: রাজতন্ত্র; রাজ্য।

• Democracy (noun)
English Meaning: government in which the supreme power is held by the people and used by them directly or indirectly through representation.
Bangla Meaning: গণতন্ত্র; গণতান্ত্রিক দেশ; গণতান্ত্রিক সরকার/সমাজ।

Source:
1. merriam-webster.
2. Accessible Dictionary by Bangla Academy.