Unmaintainable : অচল;
Related Words
un attainable  unattainable  undeniable  unmaintainable  unmentionable  untamable  untameable  untenable  See Words Also In
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Appropriate Prepositions
Bridge over (সেতু): The only entrance to Allahabad in that direction was by a bridge over the Jumna.
Business with (ব্যবসা, কাজ): He is pleased to do business with you.
Make of (কোনো উপকরণ দ্বারা সরাসরি তৈরী বোঝাতে): This necklace is made of gold.
Rejoice at/in (আনন্দ করা): Everybody rejoiced at/in his success.
Sad at (দুঃখিত): All his colleagues were very sad at his transfer from this place.
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Idioms
At a standstill (নিশ্চল, অচলাবস্থায়-adj.) The discussion is now at a standstill.
Breathe one’s last (decease, die- শেষ নিঃশেষ ত্যাগ করা, মরে যাওয়া) The man breathed his last in his native village.
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
Up to (পর্যন্ত) - I have done the exercises up to page 40.
Weal and woe (joy and sorrow, সুখ দঃখ) —Human life is full of weal and woe.