Unfathomable : অতলস্পর্শ, অগাধ, দুবোর্ধ্য;
Related Words
un fathomable  unfathomable  unputdownable  See Words Also In
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Appropriate Prepositions
Abound in(প্রাচুর্যপূর্ণ হওয়া): Fish abounds in the pond.
Conscious of(সচেতন): I am conscious of my deficiencies.
Depend on (নির্ভর করা): Presently, the students depend on/upon guide books.
Sick of (ক্লান্ত): He is sick of this idle life.
Take pity on (দয়া করা): Take pity on the helpless people.
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Idioms
Acid test (অগ্নি পরীক্ষা): You must succeed in the acid test of the time you live in.45
At-fault (guilty-কিংকর্তব্যবিমূঢ়, অপরাধ, দোষ adj.) You are at fault.
Bad names (গালমন্দ—n) He called the man bad names.
In cold blood (ঠান্ডা মাথায়): They committed this murder in cold blood.
On the whole (মোটের ওপর): On the whole, his conduct is good.