Impugnable : বিতর্কমূলক;
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Appropriate Prepositions
Antipathy to/towards (ঘৃনা): I have a strong antipathy to smoking.
Attend on/upon (সেবা করা): We should attend on/upon the ailing patient.
Noted for (বিখ্যাত): She is noted for dancing.
Play on (বাজানো): They play on the piano.
Subsist on (বেঁচে থাকা): The poor subsist mainly on rice and pulses.
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Idioms
Moot point (অমীমাংসিত বিষয়): Dowry system is still a moot point in Bangladesh.
Slip of the tongue (বলায় সামান্য ভুল): This is a slip of the tongue; don’t pay much stress on it.
Tooth and nail (strongly, প্রবলভাবে)-He fought tooth and nail against his enemy.
Turn down (refuse, প্রত্যাখান করা) —He turned down my proposal.
Well up (সুপন্ডিত)- Dr. Shahidullah was well-up in Bengali language.