Vigilant : সতর্ক প্রহরারত;
Related Words
vigilant  vigilante  See Words Also In
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Appropriate Prepositions
Burst into(কান্নায় ভেঙ্গে পড়া): He burst into tears.
Careful of (সতর্ক): He is very careful of his fault.
Desist from (বিরত থাকা): She desisted from making this.
Fatigued by (ক্লান্ত): He was fatigued by hard work.
Run into (জড়িয়ে পড়া): He had run into debt.
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Idioms
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
Bad bargain (purchasing at a high price-বেশি দামে কেনা-n) You had a bad bargain of the watch I see.
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Head and ears (সম্পূর্ণরূপে): He is over head and ears in debt.
Make hay while sun shines (ঝোপ বুঝে কোপ মারা) You should try to make hay while sun shines.