Unhelpful : অকেজো; সহায়ক বা কাজের নয় এমন;
Related Words
unhelpful  unlawful  See Words Also In
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Appropriate Prepositions
Abhorrence of (ঘৃণা): Everyone should have abhorrence of a par.
Aware of(অবগত): I am not aware of his dishonesty.
Effect of (প্রভাব): The effect of corruption is very harmful for our society.
Genius for (দক্ষতা): Nazrul had a genius for convincing girls.
Look into (তদন্ত করা/অনুসন্ধান করা): I am looking into the matter.
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Idioms
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Bear hard upon (behave rudely-নির্দয়ভাবে ব্যবহার করা - V) Never bear hard upon your servants.
In vogue (চালু): This custom is not in vogue at present.
Put the cart before the horse (to reverse the natural order of things-কোনো জিনিসের স্বাভাবিক ক্রমকে পাল্টে দেয়া) - The leader put the cart before the horse.