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From the given options, the word 'Sovereign' is the closest meaning to the word 'Autonomous'.

• Autonomous (adjective)

English Meaning: An autonomous organization, country, or region is independent and has the freedom to govern itself.
Bangla Meaning: (রাষ্ট্র/প্রতিষ্ঠান সম্বন্ধে) স্বশাসিত; স্বায়ত্তশাসিত; স্বাধীন।

Other Forms:
Autonomy (noun)

Synonyms:
Independent (স্বাধীন),
Free (স্বাধীন; স্বতন্ত্র),
Sovereign (সর্বোচ্চ; সার্বভৌম),
Self-directed (স্ব-নির্দেশিত),
Uncontrolled (নিয়ন্ত্রিত নয় এমন)।

Antonyms:
Dependent (নির্ভরশীল; সাপেক্ষ),
Subject (অধীন; পরাধীন),
Unfree (স্বাধীনতা বঞ্চিত),
Subservient (পরাধীন),
Slavish (দাসসুলভ)।

Example Sentence:
1. The country now has 17 autonomous regions, each with a distinct culture.
2. The partitioning of India created two separate and autonomous jute economies.

Source: Live MCQ Lecture.