স্থিরচেতা: [adjective] Single-minded; steady; constant.
Related Words
স্থায়িতা  স্থির তারা  স্থিরচেতা  স্থিরনেত্র  স্থিরযৌবন  See Words Also In
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Appropriate Prepositions
Fond of (প্রিয়/অনুরাগী): Children are fond of sweets.
Infested with (অতিষ্ঠ): The room is infested with rats.
Innocent of (নির্দোষ): The maid servant was proved innocent of the alleged theft.
Quarrel with (ঝগড়া করা): Some girls quarreled with one another.
Run on (বিরতিহীন চলা): The bus is running on time.
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Idioms
At a round rate (at the fixed price – নির্ধারিত মূল্যে) Things are selling in the shop at a round rate.
At every step (প্রতি পদে পদে): There are dangers at every step in our life and yet we want to live.
Fish in a troubled water (এলোমেলো অবস্থার সুযোগ নেয়া): He made a lot of money by fishing in a troubled water.
Hue and cry (শোরগোল): The villagers raised a hue and cry to see the thief.
Ups and downs (উত্থান পতন)- There is ups and downs in a man's life.