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◉ The opposite meaning of the word 'OBDURATE' is - complaisant.

Obdurate (adjective):

English Meaning: Extremely determined to act in a particular way and not to change despite what anyone else says.
Bangla Meaning: (আনুষ্ঠানিক) একগুঁয়ে; অনমনীয়; অনুশোচনাহীন।

Synonyms: Stubborn (একগুঁয়ে; জেদি), Obstinate (একগুঁয়ে; জেদি), Uncompromising (আপসহীন; অনমনীয়; অনড়; অটল), Cussed (বেয়াড়া, হতচ্ছাড়া), Refractory (অদম্য, নিয়ন্ত্রন অযোগ্য)।
Antonyms: Amenable (বাধ্য; অনুগত), Complaisant (সৌজন্যপূর্ণ), Malleable (যে কোনো অবস্থার সঙ্গে নিজেকে মানিয়ে নিতে পারে এমন; নমনীয়), Tractable (সহজে নিয়ন্ত্রণযোগ্য), Docile (নিরীহ, বিনয়ী)।

Example Sentence:
1. The president remains obdurate on immigration.
2. The child's misery would move even the most obdurate heart.

Other options,
similar - সদৃশ;
commensurate - যথাপরিমাণ;
transitory - স্বল্পকালস্থায়ী।

Source: Live MCQ Lecture.