Weak knees : মনোবলের অভাব; সংকল্পের অভাব;
Related Words
weak knees  weak ness  weakens  weakness  weaknesses  See Words Also In
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Appropriate Prepositions
Adequate to(সমানুপাতিক): The salary, he gets, is not adequate to the volume of work he has to do.
Compete with(প্রতিযোগিতা করা): He does not pke to compete with
Competent for(যোগ্য): He is not competent for the post.
Contrary to(বিপরীত, পরিপন্থী): Students should not act contrary to the rules of discipline.
Sad at (দুঃখিত): All his colleagues were very sad at his transfer from this place.
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Idioms
At times (মাঝে মাঝে): He at times comes here.
Black sheep - (কুলাঙ্গার): Stay away from the Black sheep.
Carry the day (জয়লাভ করা) The boys carried the day in the debate competition.
From hand to mouth (দিন আনে দিন খায়): The poor man live from hand to mouth.
Well off (স্বচ্ছল) - Jim and Della were not well off.