Instability : ধৈর্যহীনতা; অস্থিরতা
Related Words
inexhaustibility  instability  See Words Also In
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Appropriate Prepositions
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Composed of(তৈরী): This medicine is composed of vitamins and minerals.
Fail in (ব্যর্থ হওয়া): He failed in getting internet connection in his room.
Good for, at (ভাল): This man is good for nothing. He is good at English.
Play on (বাজানো): They play on the piano.
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Idioms
ABC - (প্রাথমিক জ্ঞান): I don't know the ABC of politics.
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Fight shy of (এড়িয়ে যাওয়া): Honest boys always fight shy of bad and dishonest friends.
To and fro (hither and thither, এদিক ওদিক)-The man is walking to and fro.
With a lavish hand (মুক্ত হস্তে)— Give away something with a lavish hand.